As I was looking through the service manual today, I discovered that 3 turns is the recommended stock setting for the carbs on this bike. Right now they're at 3 1/2 turns, and the bike runs really good. I ordered a gauge set to sync the throttles anyway, but perhaps everything is good after all.
The bike also has an aftermarket Muzzy's slip-on muffler. My understanding is that slip-on's tend to lean out the mixture condition. Could it be that the extra 1/2 turn I have dialed in there works good because of the Muzzy muffler?
that would be a good observation.. also bikes are lean from factory anyways. think youve got it figured out...