The problem youll have with 14.5mm rollers is the sled will explode with power out of the hole and will be about impossible to hook up, no matter how many or how the stud pattern is. Not to mention with 14.5mm rollers you need to be extra carefull as the heel with weight added to it can touch the moveable sheave and when this happens and you suddenly decellarate the clutch goes boom and peices of weight and belt will fly eveywhere, its alot safer to use at least 15-15.6mm rollers and the shift curve and all will be better in the end result. I have used 14.5 rollers before with success but you have to be extra carefull and have a good working knowledge of h/c's, your weight amount and all will be significantly differnt and its alot easier for a novice tuner to start with 15-15.6mm rollers.