Idol problems

[ALTVATER]

here's the deal i just rebuilt my shee and i was wonder what my deal is??? i think i probably just need bigger pilots but someone the other day told me some new motors wont idol until they r broke in good. also could it be main jets being to little? i am not very good at jetting and i am trying to figure out what is going on. i usually do all my riding at LS oklahoma. oh and do u guys think temp change will affect my motor enough i have to change mains. i have a 421 cheetah, 35 kein pwks, and shearers. my carbs have 152 mains and i haven't checked pilots.

[Duner440]

First off, nice looking bike. I have never heard that a motor will not idle right until it is broke in. I have done a couple of motors and not had that problem. I would say that your carbs are probably not in sync if I had to guess. Without hearing it anyway. I would get it idling right and then do a plug chop to see if the carbs are jetted right. Make sure you start out with it jetted fat. Good luck.