On mine, the top bracket has a sliding “bushing” that controls rocking fore and aft, the bottom adjustment is a bracket very similar which has a replaceable plastic bushing and controls in and out tilt. The top one has all the slop and I don’t see a way to install a bushing like the rectangular one on the bottom bracket. I think maybe tomorrow i’ll Take it apart again and take some pics. I drove it today and can’t handle the wind noise. This is my fourth fox body but never fooled with windows, they were too new at the time. A new 86 LX 5,0 5 spd conv, 86 GT AOD T top, 87 LX 5.0 5 spd, conv and now the 90 LX 5.0 AOD conv (7-up). I also once had a 63 Falcon which I installed a 93 5.0 HO with a C-4.