I too my xb4 apart to clean it up and replace bearings and change diff fluid and when I put the rear end back together the suspension on the right side won't compress all the way. The shock compression stops about a 1/4" away from the full compressed position (see pic). The only thing I can think of is that I installed a new upright and idk if maybe it's not the right one? But idk if that upright is even the new one. I can't tell now.they both look the same ideas?
I've only had the buggy for a short time so idk if it was like this before I disassembled it or not. I don't think it was but can't say for sure.