I just put my first 3 shoe clutch and phbg on, 19mm on my 70cc airsal. Everythings peachy, but once I'm warmed up it has this strange behavior of switching RPMs every few seconds or so. Slow rpm, five seconds..faster rpm, five seconds...back to slow, 5 seconds, back to fast 5 seconds, etc. Not picking up any airleaks, and I feel like the consistency of time in switching RPMs smells of something electrical rather than fuel delivery. I've got a Treats CDI in there.
Anyone seen this before?