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I wish you could have had Richard at precision do your trans. I understand that you have already spent a lot of money on your rebuild and he is pretty far from you but he may be able to give you some advice on what to do if you can’t resolve it. He is hard to get ahold of on the phone as he does all builds personally. He will talk to you in person so it might be worth the trip to talk to someone that I feel knows his stuff. Again if you haven’t watched some of his videos your missing some good information.
So if you manually shift, 1,2,3,4 does it shift appropriately? Does it 4-3, 3-2 & 2-1 shift manually correctly? (obviously at the appropriate speeds)