I have been in the middle of installing the WH 203-20 combo in my bronco. Since I was pulling everything out, I went ahead and replace the clutch and had my 435 rebuilt. Today I started the truck after putting fluid in the 3 gear boxes left the hubs unlocked and put the front end in Hi. It is difficult to get the 435 into gear. i haven't drivven it yet, and I called the tranny shop and he told me it was normal for it to be rough until the gears got hot and loosened everything up. Does anyone who has rebuilt there tranny found similiar??? I'll be driving it tomorrow.