first of all i would like to thank everyone on this forum for all the help i got in getting this setup to geather. kyle you were a huge help. couldnt have done it with out you guys. last night i finally got the motor back togeather and it fired right up. better than it ever did on gas. on idle egt was about 800dg but with i brought up the rpms to about 3500 the egt just started climbing pass 1200. so i think im lean. ill have more time to try and dial it in today. when i let off the throttle from 3500 rpm the bike would backfire a flame out of the exhaust. is this normal or is this also a sign of being lean?