I just installed a B&M trans pack in my transmission it a '79-'96 tourquflite 727A. The problem is (that I did it myself i should have had a pro do it or supervise) now when the transmission is cold it works great, but when it gets warm it shifts down into second and wont shift out. I can let it cool off and it will run fine until it heats up again. Does anyone have any ideas on what the problem could be or is it fu-bard.