i know a guy who put short scews with washer through the inside so the points were out then took a car innertube and glued it around the inside to cover the heads of the screws he used them on his MT om the lake and it worked good enough to pull wheelies and if you wrap the head in foil it should stay around 220 atleast that what mine ran in 15 deg but like it was stated it might not be the best for your motor i was just running a old force .28 i pulled from my old jammin rtr truggy