cab mount question

[erikh09]

Hi all,

I recently swapped my tired old cab mounts out for new poly mounts in my 67 GMC 3/4ton. They did sit about 1/4" or so higher than the old ones but the issue I am having is with the doors closing. The doors closed rock solid with the old mounts in. Now with the new mounts they are both out of alignment roughly 1/4-1/2 of an inch. It seems as though the cab or the doors are sagging? There is no play in the doors if I lift up on them, but when I go to close them, the striker hits below the latch and actually lifts up to close...annoying to say the least since they closed perfectly before I made the change. The floor has minimal rust except in typical places like cab corners, rockers near front of door, and a little on kick panel area. I am not understanding how lifting the cab (which the doors are mounted to) with the new mounts will knock the doors out of alignment. I am sure I am not the first with this issue, but thanks for any advice/tips you can lend.

Erik