these engines are not the norm, many of the problems have been caused by insufficient ducting of air onto the fins, sort this problem out, and you have a bb=etter chance of them behaving, we sell them, and have to explain the ducting thing quite a lot, i always hand enquireses over to another guy who uses them, but, i cannot see the beneift in your camel, surely this would be better with a standard motor? or a saito twin?? the SP series are ment for tight cowls, as an inline engine instalation