There is no problem here, But there is a reason why thumpers are prefered on a short track - more torq less wheel spin and so on. Its not easy setting a banshee motor up to run short track against a 60 -65hp 450. Don't get me wrong, My non ported shee still kicks a$$ against most of the pro class with my chassis set-up We race short tracks hence the name, top speed around 40-50mph very tight corners short straights! bike is set up great just need some power, and try to control that violent wheel spin!