Currently setting up Dana 80 rear end. We get it together you can turn the rear either way with the pinion with easy but if you try to turn it byHand on ring gear rolls backward fine but you can not roll forward. Then you can put in axles and try to roll it backward fine lockes up forward. We have tried rolling with only pinion it rolls fine. I tried rolling it with only ring gear in it with or without axles rolls fine. I have set the pinion depth deeper than it’s supposed to be and also shallowe than it should be and when ring and pinion are both in it it is locked up forward. I even set the back lash out as far as .060 still same result. Any ideas? Yukon spool,gears and axels all new