[bingo2]

All good suggestions thus far but, as most of the carburetor tuning threads go, hardly anyone ever mentions the most important component of the process.

Ignition first and foremost. You'll never get the carburetor tuned correctly without ensuring your ignition system is in tiptop operating condition with the proper spark plugs gapped correctly and the initial and total advance set to specification along with the correct advance curve.

My suggestion is to call Brent and go over the specification for your engine.