I have a BTTA with about a gallon break-in on it and its runs good but last race it was hard keeping the temps up. The motor is coming off at about 180 but almost seems like its lean bogging on the bottom but it runs good on top. When I try to richen the bottom a hour or so it loads too up quickly but when I lean it a hour or two the idle shoots up even with proper gap. My needles are both just about a half to quarter turn above flush. Anyway what I'm asking is where is a good spot to start with needles on my BTTA when race tuning also what carb insert do you recommend for a tight technical track? Thanks for any replies!