Ok i just rebuilt my 4t65e hd tapshift trans with a full master rebuild kit and all new solenoids. It slips in every gear if you give it over 1/4 throttle. If you barely gas it, it dont slip but the 1-2 and 2-3 shift is delayed. This is also causing my fluid to heat up quicker then usual. do you guys think it could be a bad teflon seal on the input drum? i was rebuilding trans due to broken forward band and the car shifted fine before band broke. All check balls are in right spot. Now heres the low down, when i assembled the trans, i air checked every gear and i never got a good seal on the 2nd clutch. I heard the 2nd clutch was hard to get a good seal with air so i decided to go with it. Today i pressure checked the trans and on cold start in park and got 60 psi, immediately put in drive and it dropped to 50, downshifted to manual and it stayed at 50! I then pulled the main trans plug to read max line pressure and pressure stayed at 50 again in drive and manual. I ripped trans apart again and ohm tested the solenoids and everything came back ok, i decided to air check 2nd again and it bleed off again? Really need your guys help, dont have money to pay a trans shop