Agree totally. It is a lot of work to rollerized and I have seen no evidence of any performance gain. Yes I suppose that needle bearings everywhere in the case would not be good. All I was saying is that they do work and can take way more load than a thrust washer, and are reasonably reliable, otherwise the oem,s would not use them. One thing that is very importance when rollerizing is to keep the end play extremely close. A sloppy fit and they can disassemble. The picture I posted, it took me hours of trial and error to get the gear assembly to run true in the chuck and 20 minutes to machine. That's for one bearing. Lol
