Not sure where to look next having hard shifts with my 96 7.3 especially 1-2 if just cruising. If put it to the floor the 1-2 shift is smooth. Also when cruising around 60 the speedometer jumps around a mile or two continuously I tried a vss but still the same. Not sure if problem is related or not and also was noticing it will shift 1-2 then seems like tc locks and drops few hundred then to 3 etc. Starting to wonder if tc isn't going out and causing some of problems since it did want to lock and unlock in between the 3-4 shift as well.