Backed the idle valve as per your suggestions, but no love.  Backed out in small increments althewhile fiddling w/the high speed needle valve.  <div>
</div><div>Am able to blip the throttle w/o any problems now.  Had to lean the high speed valve to get better note.  But on throttle down, the  engine just cuts abruptly.  Also, am not able to idle it to a low grunt.  Just a whiny somewhat fast whirl.</div><div>
</div><div>I've spent hours fiddling, and no flying.  Doh!  </div><div>
</div><div>Am listening, testing, but that dreaded abrupt cut get me everytime.  This bird just won't sing.</div>