I agree, all engines will require some tuning as they break in and get looser...It's the pilots who never touch the carb needles until 4 or 5 gallons have been run through that have the most problems, and that's who I was referring to...
RTK is innocent ? Must be two RTKs
And Ed Cregger is also right, if the low is too lean it will never transition, and if the high is too lean it will quit before it gets to WOT...If you open the throttle and the engine gets almost to max rpm and starts to slow down, there's a message there, shut it down and richen it..
It's really hard to get one too lean to stick, but it can be done if you try hard enough..[8|
Or don't use enough oil []