My 89 RS is having some issues, when I put the car in gear it goes into gear really rough. Also when it shifts from 1st to second it throws you in your seat when your driving normally not even wot. I have a b&m mega shifter in it that the guy I bought it off of installed. Not sure if he messed something up when he installed it. Anyone got any ideas. I haven't been able to get it on a lift yet just wanted to see if anyone had any suggestions