Reply To: I need help tuning / syncing my carbs!
They never ran well with 17.5 pilots , so you will want to downsize back to 15 each pilot. Use 2.5 turns out as a base then see how it responds.
You may want a baffle in the exhaust as i have not experienced a 125cc in the past that run better without baffles.
And is it still having its original airbox on ? without it you will have hell , a lot of us tried to do away with the stock airbox but the engine & carbs wasn’t having it even the 650 sister.
The middle screw of the carb isn’t usually touched once set by the factory, you want both butterflies to open at the same time but with a little bit more air to the rear (since it uses a bigger jet)
You did not say what the main jets are so i could not comment further