After a lot of monkeying around, I finally got Ol' Red to run properly -
but not exactly by the book. If I leave the idle stabilizer valve (which
hums as it should) disconnected, the engine starts and after a warmup -
idles delightfully around 800/900 rpm.

When I do a cold start with the ISV connected - the engine over speeds.
Not good right from a cold start. Should come  up to 1200-1500 and then
drop back as it warms. But it goes well above that. I won't operate
under those conditions so just keep it disconnected.

Anyone with any ideas as to how to adjust this out to get it to function
properly with no runaway speed on start up?

Thanks,

John