THE REASON I ASKED THAT I TAKE MY BIKE IN SAT. TO PUT IN A IMS.440 KIT, MIDRANGE CAM, PORT POLISH, ETC........ I ALSO HAVE THE QUICKSIVER CAR.HERE AT THE HOUSE TO BE PUT ON TOO. DID IT EVER NEED ADJUSTMENT ONCE IT WAS PUT ON INITIALLY. IS THE THUMB THROTLE HARDER TO PUSH. THANKS FOR THE INFO.