Hehehe ! Glad you got it figured. We are here to help ... sometimes we get it and sometimes we don't ? Sometimes it's difficult to figure out through a forum and not getting your hand s on a bike. And having Tach really helps on these bikes, or any bike for that matter. But anyway... I believe what is going on with the rev limiter, and from what I have seen , is that... It cuts spark first , on every other engine revolution. Which causes a miss , or your " soft cut " at around 5250 rpm's. You can actually hold your throttle right on the edge of that soft cut and feel it sputter. At around 5500 rpm's it will go into a HARD cut , were it cuts off the fuel. The valve springs have a pretty lite seat pressure as well , so if you go much above that RPM range... give or take. You could start floating the valves , which would kill power and pump a lifter temporarily.