Elements in draggable window do not remain fixed [SOLVED]

I have the following code implemented in the draggable window function. The idea is that a player can open their inventory and move around the textures in various "slots" that are defined int he function. However, when the window is s$$anonymous$$fted the slots move along the y-axis. The x-axis seems to be fine and remains fixed. The code block is for the first inventory slot:

 if(GUI.Button(new Rect(myBagWindowSize.width*0.97f, 2, 20, 15), " "))
         {
             checkMyBag = false;
         }
 
         GUI.DrawTexture(new Rect(0, 0, myBagWindowSize.width, myBagWindowSize.height), bagTexture);
 
         #region main bag display
         float sizex = myBagWindowSize.width*(64f/1024f);
         float sizey = myBagWindowSize.height*(64f/640f);
         Vector2 invertedMousePos = GUIUtility.ScreenToGUIPoint(Input.mousePosition);
         invertedMousePos.y = myBagWindowSize.height - invertedMousePos.y;
 
         float pos0x = myBagWindowSize.width*(64f/1024f);
         float pos0y = myBagWindowSize.height*(352f/640f);
         Rect slot0 = new Rect(pos0x, pos0y, sizex, sizey);
         if(main_bag[0] != "")
         {
             #region ...code
             GUI.DrawTexture(slot0, _Icons.GetIcon(main_bag[0]));
 
             if(!global_item_selected && slot0.Contains(invertedMousePos))
             {
                 main_bag_item_hover[0] = true;
                 Cursor.SetCursor(grab_ico, new Vector2(grab_ico.width/2, grab_ico.height/2), CursorMode.Auto);
             }
             else if(!global_item_selected && !slot0.Contains(invertedMousePos) && main_bag_item_hover[0])
             {
                 main_bag_item_hover[0] = false;
                 Cursor.SetCursor(main_cursor, new Vector2(0,0), CursorMode.Auto);
             }
 
             if(!global_item_selected && slot0.Contains(invertedMousePos) && Input.GetMouseButtonUp(0))
             {
                 w$$anonymous$$leSelecting = true;
                 Cursor.SetCursor(_Icons.GetIcon(main_bag[0]), new Vector2(sizex/2, sizey/2), CursorMode.Auto);
                 main_bag[0] = "";
                 global_index_from = 0;
                 global_item_selected = true;
             }
             #endregion
         }
         else if(global_item_selected && slot0.Contains(invertedMousePos) && Input.GetMouseButtonUp(0) && !w$$anonymous$$leSelecting)
         {
             #region ...code
             global_item_selected = false;
             item_replaced_bagType = "main";
             global_index_to = 0;
             if(main_bag[0] != "")
             {
                 Cursor.SetCursor(_Icons.GetIcon(main_bag[0]), new Vector2(sizex/2, sizey/2), CursorMode.Auto);
             }
             item_replaced = true;
             #endregion
         }