Yeah, it needs a limiter. 41 is too much total. That's a pretty low RPM for it too. It would probably work better with 34-36 total in by 2500-3000. How does it start hot? Does it lug the starter any? What about spark knock (ping)? 24 is gettin pretty high for initial.....but some like it. Maybe back it off to 20 and put the limiter on the 14* slots and see how it does. It'll probably be really close spring wise with one light and one medium spring.