Need help with my transmission and if this is normal. A few months ago I had my transmission built by Mike L, awesome guy who definitely knows his stuff. The transfer case was done for so he said just be easy on it and get a new one, finally installed a new transfer case and I got on it for the first time, all the shifts are crisp and smooth until the 3-4 shift, it's very jerky and rough. Only happens when I pin it from a stop. Is this normal? Thanks in advance!