I’m having problems with a JEGS TH-400. Any help other than get a manual transmission would be great. I’ve written e-mial to JEGS, and TCI. It’s been 5 months with no replies. I have even resent the e-mail to their other e-mail addresses with no reply. First time I took car to local track, the transmission hated 2nd Gear going almost straight to 3rd. I figured this to be a problem stock gear shifter, and vacuum kick down. If I was in water pit, the car would go through all three gears. When trying to not burn out and accelerating, it goes clear through 1st, then hits 2nd. The 2nd gear lasts for like 1-2 second then shifts directly to 3rd. Even if I pull the shifter back to second it would downshift and stay in 2nd for like 1-3 second, and shift again to 3rd. I if left my finger of the lock button and pulled stock shifter into 1st/2nd it would stay in second. But I had to keep beating the stock shifter to get it to shift to 2nd So I buy a new kick down, a B&M shifter, and thought what the heck I had car up decided to stick in a TCI Trans Scat shift Kit. As my luck, now the transmission only has 1st gear now… I had a hell of time getting the parts out of Valve Body and think this is my problem. The instructions from TCI suck. Plus I have no idea how much to grind, and probably screwed this part up, but it already kind of looked like this part already. I guess JEGS used a weak shift kit that resembles this shift kit. I’ve checked and rechecked the adjustable cable on B&M shifter, and it seems to be ok, because Park, Reverse, Neutral all are fine. Just Drive-1st all get 1st. I can hear the transmission click, when shifting 3rd, 2nd, 1st, and back so I doubt this is the problem. With out knowing there was a problem, I took car back to track the next weekend. Funny thing is the car runs faster at track with only 1 gear than it did with 1½ gears. The other funny thing is, it ran faster with only 1 gear than most stock Japanese non turbo cars. It ran the ¼ at 16.5 sec at 64.4mph. The 1st time at track the car was running 17-18 seconds at 75-85 mph, because the car wanted to be in 3rd gear. Since the parts in the valve body were such a bear to get out, and I think I screwed these parts out, and grinding on it. So I ordered a TCI Trans Scat Valve Body Shift Kit from Summit Racing. I’m guessing I might have to go get reamed at transmission shop. Some old guys with old nova, the other with Chevelle, said I probably blew up 2nd gear. I never felt a snap/surge/metallic sounds. I’ve broken bands and gears on other GM cars, and every time I heard all kinds of sounds every time they were loud and nasty sounding. This transmission has never made any of those sounds. It acts like there is a stuck valve, such and the 1-2 valve that I had problem with in valve body. Or something else is stuck. Like there isn’t enough line pressure or something to pop it to next gear.