diff --git a/src/lib/api/adapters/grid.adapter.ts b/src/lib/api/adapters/grid.adapter.ts
index 3302a780..041ebd2f 100644
--- a/src/lib/api/adapters/grid.adapter.ts
+++ b/src/lib/api/adapters/grid.adapter.ts
@@ -21,28 +21,28 @@ export interface CreateGridWeaponParams {
 	partyId: string
 	weaponId: string
 	position: number
-	mainhand?: boolean
-	uncapLevel?: number
-	transcendenceStep?: number
+	mainhand?: boolean | undefined
+	uncapLevel?: number | undefined
+	transcendenceStep?: number | undefined
 }
 
 export interface CreateGridCharacterParams {
 	partyId: string
 	characterId: string
 	position: number
-	uncapLevel?: number
-	transcendenceStep?: number
+	uncapLevel?: number | undefined
+	transcendenceStep?: number | undefined
 }
 
 export interface CreateGridSummonParams {
 	partyId: string
 	summonId: string
 	position: number
-	main?: boolean
-	friend?: boolean
-	quickSummon?: boolean
-	uncapLevel?: number
-	transcendenceStep?: number
+	main?: boolean | undefined
+	friend?: boolean | undefined
+	quickSummon?: boolean | undefined
+	uncapLevel?: number | undefined
+	transcendenceStep?: number | undefined
 }
 
 /**
diff --git a/src/lib/api/adapters/party.adapter.ts b/src/lib/api/adapters/party.adapter.ts
index 864f4d03..8d798186 100644
--- a/src/lib/api/adapters/party.adapter.ts
+++ b/src/lib/api/adapters/party.adapter.ts
@@ -17,13 +17,13 @@ import type { Party, GridWeapon, GridCharacter, GridSummon } from '$lib/types/ap
  * Parameters for creating a new party
  */
 export interface CreatePartyParams {
-	name?: string
-	description?: string
-	visibility?: 'public' | 'private' | 'unlisted'
-	jobId?: string
-	raidId?: string
-	guidebookId?: string
-	extras?: Record<string, any>
+	name?: string | undefined
+	description?: string | undefined
+	visibility?: 'public' | 'private' | 'unlisted' | undefined
+	jobId?: string | undefined
+	raidId?: string | undefined
+	guidebookId?: string | undefined
+	extras?: Record<string, any> | undefined
 }
 
 /**
diff --git a/src/lib/api/resources/users.ts b/src/lib/api/resources/users.ts
index d66fbf66..f5e45284 100644
--- a/src/lib/api/resources/users.ts
+++ b/src/lib/api/resources/users.ts
@@ -26,7 +26,25 @@ export const users = {
 	 * Update user settings
 	 */
 	update: async (userId: string, params: UserUpdateParams): Promise<UserResponse> => {
-		const result = await userAdapter.updateProfile(params)
+		// Transform flat params to nested UserInfo structure
+		const updates: Partial<{
+			gender: number | undefined
+			language: string | undefined
+			theme: string | undefined
+			avatar: { picture?: string | undefined; element?: string | undefined }
+		}> = {}
+
+		if (params.gender !== undefined) updates.gender = params.gender
+		if (params.language !== undefined) updates.language = params.language
+		if (params.theme !== undefined) updates.theme = params.theme
+
+		if (params.picture !== undefined || params.element !== undefined) {
+			updates.avatar = {}
+			if (params.picture !== undefined) updates.avatar.picture = params.picture
+			if (params.element !== undefined) updates.avatar.element = params.element
+		}
+
+		const result = await userAdapter.updateProfile(updates)
 		return {
 			id: result.id,
 			username: result.username,
diff --git a/src/lib/components/sidebar/details/TeamView.svelte b/src/lib/components/sidebar/details/TeamView.svelte
index bb5d25e5..fd7797d8 100644
--- a/src/lib/components/sidebar/details/TeamView.svelte
+++ b/src/lib/components/sidebar/details/TeamView.svelte
@@ -48,7 +48,11 @@
 
 		{#if modificationStatus.hasAwakening}
 			<ModificationSection title="Awakening" visible={true}>
-				<AwakeningDisplay awakening={char.awakening} size="medium" showLevel={true} />
+				<AwakeningDisplay
+					{...(char.awakening ? { awakening: char.awakening } : {})}
+					size="medium"
+					showLevel={true}
+				/>
 			</ModificationSection>
 		{/if}
 
diff --git a/src/lib/services/grid.service.ts b/src/lib/services/grid.service.ts
index 644637ec..03175b46 100644
--- a/src/lib/services/grid.service.ts
+++ b/src/lib/services/grid.service.ts
@@ -39,13 +39,13 @@ export class GridService {
   ): Promise<GridUpdateResult> {
     try {
       // Note: The backend computes the correct uncap level based on the weapon's FLB/ULB/transcendence flags
-      const gridWeapon = await gridAdapter.createWeapon(optionalProps({
+      const gridWeapon = await gridAdapter.createWeapon({
         partyId,
         weaponId,
         position,
         mainhand: options?.mainhand,
         transcendenceStep: 0
-      }), this.buildHeaders(editKey))
+      }, this.buildHeaders(editKey))
 
       console.log('[GridService] Created grid weapon:', gridWeapon)
 
@@ -208,14 +208,14 @@ export class GridService {
     options?: { main?: boolean; friend?: boolean; shortcode?: string }
   ): Promise<Party> {
     // Note: The backend computes the correct uncap level based on the summon's FLB/ULB/transcendence flags
-    const gridSummon = await gridAdapter.createSummon(optionalProps({
+    const gridSummon = await gridAdapter.createSummon({
       partyId,
       summonId,
       position,
       main: options?.main,
       friend: options?.friend,
       transcendenceStep: 0
-    }), this.buildHeaders(editKey))
+    }, this.buildHeaders(editKey))
 
     console.log('[GridService] Created grid summon:', gridSummon)
 
diff --git a/src/lib/services/party.service.ts b/src/lib/services/party.service.ts
index 27c40ec4..436addcb 100644
--- a/src/lib/services/party.service.ts
+++ b/src/lib/services/party.service.ts
@@ -67,7 +67,7 @@ export class PartyService {
     party: Party
     editKey?: string
   }> {
-    const apiPayload = optionalProps(this.mapToApiPayload(payload))
+    const apiPayload = this.mapToApiPayload(payload)
     const party = await partyAdapter.create(apiPayload)
 
     // Note: Edit key handling may need to be adjusted based on how the API returns it
@@ -78,7 +78,7 @@ export class PartyService {
    * Update party details
    */
   async update(id: string, payload: PartyUpdatePayload, editKey?: string): Promise<Party> {
-    const apiPayload = optionalProps(this.mapToApiPayload(payload))
+    const apiPayload = this.mapToApiPayload(payload)
     return partyAdapter.update({ shortcode: id, ...apiPayload })
   }