I need some help, My 53 3100 with 350, 4sp, and 3.41 rear axle has a "shudder" when ever I try to reverse. I though maybe the pinion angle might be the problem, so added 2 degrees today and no change. I have new motor mounts, new u-joints and transmission cross member. I haven't checked the tranny mount yet. Anybody else had this problem, and know of a fix. I appriciate any input. Thanks.