G'morning Rodney
I believe the title to this thread is a bit misleading. I strongly believe we should all sync the carbs on a regular basis BUT unless you are able to keep "the green light in the middle" through all RPMs from idle to full throttle (It was always a compromise for me) then maybe a modification to the balance tube might be helpful.
Going to a breakfast flyin this morning. We'll see how another 2 hours air time goes.
Take care
Don