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<DIV><FONT size=2 face=Arial>Many thanks to Jerry Stebbins for his suggestion to
cure the extreme vibration of my Y.S. 1.40 L. Richard Verano of Y.S.
services was kind enough to send me a head shim for the engine. The
shim was only .0085" thick, but it did the trick. The engine is now
markedly smoother at all rpm ranges, and idles much more smoothly, The
transition to high speed is immediate, with no hesitation or burping. And,
it only cost me 200 rpm at top speed, (WOT.)</FONT></DIV>
<DIV><FONT size=2 face=Arial>Should I choose to, or need to, obtain the extra
rpm's, I can do so with 30% heli fuel. I can't believe it's the same
engine. It's gone from being an expensive paperweight, to a viable
powerplant.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Many thanks to all who replied; this list is such a
great source of help!</FONT></DIV>
<DIV><FONT size=2 face=Arial>Bill Glaze</FONT></DIV>
<DIV><FONT size=2 face=Arial>NSRCA 2388</FONT></DIV></BODY></HTML>