About 2 months ago I had 3.55 gears installed. Recently I've been noticing odd deceleration issues mainly lower gears. It seems like when Im decelerating the car seems to jerk really hard. It's hard to describe exactly but it seems like the flywheel bounces between decelerating and accelerating. In a parking lot in first gear with the clutch completely engaged it feels like it engine brakes then coasts then brakes again causing the car to jerk. Does anyone have any input?