well, installed my freshly rebuilt 4L80E with transgo manual valve body conversion kit. 4th and 3rd are ok, but put it in 2nd or first and it won't move. Feels like it's applying two gears at once (transbrake like) but I have no transbrake. Anybody had this problem?

 

Holes are drilled wrong in the valve body. Two side by side holes.

 

i wouldn't doubt it. We're going to take it apart and go back thru the instructions.