Per my recent thread I am now reinstalling my transmission after replacing the rear main, pilot bearing, clutch etc. I also had a transmission leak so I had a little work done to the there as well. I purchased a replacement input shaft, 10 spline, I forget the number of teeth but I confirmed it was the same number as the old input shaft. So....after getting the transmission back today I tried to get it installed but there seems to be like 3/8 of an inch between the bell housing and main case. Could there be two different length input shafts that are that close but identical in every other way? Or am I just doing something wrong?