I never had a single problem with my other engines.
I want to believe that i can tune an engine without any problems...but this one is a nightmare.
I finished 35min races with it having bogging problems and finishing at 240-250F.If i richen the LSN any more it looses power down low due to rich settings.
The high speed needle is pretty easy to tune so i don't thing i have it wrong there.
Although i haven't checked my rod and bearings to be honest.