Has anyone had any rev limiter problems using the vortex ignition? I had my head done buy a well respected shop with oversized s/s valves & springs, the whole set-up, using a stage 2 cam, je piston & vortex ignition. I had a problem with the s/s intake valves floating & sent the head back & had ti intakes with bronze seats installed. Everything ran good for three supermoto race weekend than POP!!! One of the exhaust valve heads broke & took out the whole top end. All the clearances were checked & OK. The only thing we can think of is that the rev limiter is ether not working or set too high & the exhaust valve floated & hooked the intake valve. Has anyone had any problems with this? Is there a way to check the rev limit, possibly on a dyno?