Some symptons of a too high level are,
- The choke does not work properly.
- You'll see liquid spitting in the end of the exhaust after initial start up.
- The carbon deposit will not be uniform and you'll see streaks or liquid stains.
- Your exhaust pipes are eternally black no matter what you set your jetting at.
Use a good set of needle nose vise grips to break the tightness of the screws that hold the float bowl to the carburetor body. Others have...