From what it looks like to me, the 32-bit value preceeding the item quantity is an address, but I've forgotten what button to push in Vitacheat to follow said addresses. Could help to find pointers for the item values.
triangle. They definitely work as addresses. But I can't imagine why they would precede each item, pointers should lead TOWARDS the item, not away from it... Then again, I haven't tried adding/removing these addresses/IDs to confirm.
I tried doing a pointer search last night, but failed because I was trying something new and didn't work out on my end. T.T A few green results here and there but I used 6 dumps and should see much more than a green pointer. But, if the preceding values are important, my dumps were in the 85-89 range, and the preceding values were leading to the 89's. I'll need to make dumps for 85-8A to see that area. Might explain why I have only a handful of green results and no blues or better.
All I know is that the Items seem to move around every time you gain a new item that you didn't have before. So might need a few dumps from early in the game before you get newer items. The crafting menu in the shop also helps, as combining 3 of a +1 item gives you a +2 item, and x3 +2 items give you a +3 item.
Also, the pointer I found for Rage wasn't found in TempAR... I found it by looking at the pointer near the Courage code. You might try following the pointer and see why it's not working? There's 2 pointers in that area of RAM that lead to the right areas (1 to rage and 1 to Courage) the rest are pointers to the 88 range of addresses, but I think these 2 lead to the 85 area, if I remember right.