Hello Gentlemen

I recently broke-in & installed a New MVVS 8.0 engine on a 3D plane.

The problem I have is the carb barrel starts to stick after the 2nd flight.

I then take the barrel out & remove a small burr from housing & 360 grit emery paper the barrel & reassemble & it is fine for 2 more flights before sticking again.

Rather than do the same procedure again I decided to ask the experts as the old style carbs never gave me an ounce of trouble.

Suggestions please??

Thanks, Mike