The popping could be coming from the air/idle mixture screws. Since you have a newer bike you'll probably have D-shaped screws to adjust the idle mix. You should tighten them until they stop turning (don't go gorilla or snug, just until it stops turning) then turn them out 2 full rotations and start from there. If they are still popping give it a half or quarter turn up (to 2.25 or 2.5) and try again. My setup is Epco pipes (48" long, baffles in) 130 mains, 45 pilots, 2.75 turns out. Took me a little while to get it right but I'm happy with it. I'll have to re-adjust after I remove the airbox and do the big bore but that'll be another thread.
Here's a few carb sites that have helped me a bit
CVK primer More CVK stuff 
