I just received my adapter plate and have started assembly. I am going by the extreme bends write up and I have run into a snag. With everything seperate I can easily turn the main shaft in the 420. When I get the t-case, adapter and tranny bolted together I can not longer turn the shaft. With a micrometer, the depth of the recess in the t-case for the bearing is .160 inches and the amount the bearing sticks out of the adapter is .199 inches. I think it is that difference that is killing me. Any one else every have this problem? Any ideas?