Nice work Isaac. That tire looks huge on the back of the Runner.
I had/have the same issue with my carrier walking on the back of the bumper and locking up the latch. I have a pin on mine but there is still enough room to allow for movement of the carrier. I've tried different adjustments from super tight (locks up) to super loose (why bother...) to try and compensate, but I've never dialed it in perfectly. For now my latch is moderately loose and I have to give the tire a shove toward the truck each time I want to open the carrier. It's a nuisance for sure.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock