rebuilt tranny not shifting right

[mark21742]

04 a4 GTO, I just rebuilt my 4L60e with a Hugh's performance race overhaul kit and installed a 3,800 stall.
1st, 2nd, and 3rd feel great, but when it shifts into 4th the engine drags down and loses speed. it almost feels like its trying to grab two gears at once. I know I need a speed sensor (MPH jumps all over the place in any gear, and did this up to about 30mph before the tranny went out....but now does it nomatter what the speed is)

I'm lost on what could be wrong if anyone has any suggestions please offer them!

[mark21742]

I have talked to a few friends (not pro tranny guys) and both of them are saying check balls in the valvebody might not be in right, but not sure