i just put in a new tranny (700r4) the car drives from 1st to 2nd gear than instantly drops down to 3rd and than as instant as it drop to third it goes back to 2nd, does anyone have any idea whats wrong? the other gears seem to be fine as i drive just those two have the problem.car is an 1983 trans am 350 4bbl. pretty much all stock. please help save my tranny!!!