My friend has a Silverado SS that he put a vette servo into. The guy didnt put the seal in the right way and it leaked fluid. He didnt notice till it started slipping, but immediately stopped it. After a fillup and fixing the seal its not taking overdrive. Is the transmission shot or is there a way to get it fixed? 2nd gear was slipping a little before the servo was put in and I smelled the fluid. It smelled worse than mine does. If it needs a rebuild can someone recomend a reputable builder near Paris Texas. Thanks