Have to agree with Roundslide, with my relentless pursuit of perfect Air/fuel mixture ratio I discovered one thing. The leaner the mixture the more popping I've encountered. My suggestion would be to take the bike out for a good ride, maybe a half hour or so. Then pull a spark plug and see what color your plug is. I increased my mains (had too with performance pipes) and darn near eliminated all the popping.

Good Luck, Kerby

Better to remain silent and be thought a fool than to speak out and remove all doubt