I tune differently.....at idle pinch the fuel line...the engine should continue to run for 5 or 6 seconds...start to rev up then begin to die....if it dies too soon, then the low end is lean, richen the low end and repeat the process..if it rus too long you're rich lean the low end and repeat.....only make adjustments at 1/8 of a turn at a time......once the low end is set go for the high end.....start out a bit richer than you like.....go to full throttle......start to lean you'll hear the engine pick up.....it will get to a point that the engine hits it's peak.....if you richen or lean it you can hear the engine slow down....go to peak and richen about a 1/4 of a turn...now the acid test.....run the engine at idle for a while......advance the throttle to full.....the engine should advance smoothly with no burbles.......if you have problems repeat the process......
Remember to make small adjustments..when finished you should see a slight smoke trail against a blue sky......its always better to run a tad rich than lean....good flyin