Darkfire,

I find a good starting point is the HSN about flush with the edge of the brass ring around the screw itself. And the LSN about 1 turn OUT not IN from flush. That's working for me while I'm breaking in this motor. If it won't idle or run but does fire up, it's most likely the idle screw, I have mine about a half turn to a full turn in from flush and that's working good so far.

With the settings above you should be able to turn the idle screw atleast a full turn in from flush if it won't start, I would try doing that because you'll be there all day cranking away..

Good luck!