[jhirasak]

Jim,

If you have made as large of change in idle jets and main jets sizes as you indicate in your last message, it is no wonder that you are having tuning problems. It does not take much a jet change to get significant difference in response at various ranges of engine operations. Sometimes, you can just make an adjustment to the idle mixture screw and clear up problems in your transition performance. You need to systematically make one change at a time and note how it affects your air/fuel ratio as well as engine performance. Based on those results, you should make the next incremental change to determine whether you have improved the situation or made it worse. Without a record of each change that you have made along with the performance difference associated with that change, I cannot provide you with any guidance on how to correct your problem.

John