I put together a 49 state engine with CA carbs. I thought it would run rough, but other than a seemingly rich idle, the bike runs fine or the same that it did. The only difference I know in the carbs are different main jets, 135 vs. 132. I have a Yosh rs3 slipon exhaust. I'm concerned about the idle mixture and wondering if I should rejet. Also, any opinions on the Yoshimura stage 1 kit;(i.e. are all kits created equal) I found one for cheap?