Hi again all, I'm putting my bike back together, after having done a lot of service work (valves, new oil regulator, cam chain tensioners) and also I've switched to a 2 to 1 exhaust, and installed Pyndons prefilter. I'm using a jetting config that he recommended for it (nothing special really, actually pretty close to stock). It starts fine, idles fine, revvs fine. No smoke from the exhaust. But when I rev it hard and then let it off, the idle drops low (about 1000rpm) for a few seconds then slowly recovers. Sometimes, if its a really fast on/off throttle snap, it dies on the way back to idle. It pops a little on its way back down the revs, but thats normal I believe. Any ideas? Thanks!