Posted here before, thought I had it figured out, but...97 1200, straight pipes, rejetted with a 180 and 42 jets, drilled holes in back plate of stock air cleaner. Runs darn good going down the road but if I rap on it, it sputters, and after a 20 minute ride, I swear it smells hot? and when I get in my driveway, it backfires just as I ready to turn it off. Any advice?