Be sure you've got the crush sleeve turned the right way, some of them have one end slightly larger than the other and when you start to crank them down, they will go over the lip on the pinion shaft instead of crushing. It is almost impossible to get a crush sleeve started collapsing without an air impact wrench but be careful, once they start to crush, they go pretty quickly. I think it's helpful to put a paint mark on your socket so you can tell how far it's turning, you only want to go a few degrees at a time until you reach the proper preload. Sometimes only two or three hits with an impact is the difference between too much and not enough. You can give me a call if you want, Rich nine one three nine 63 nine 029