Where in Idaho?
I would do this...start the saw, make a few cuts with it to get it warm. Then, make a good cut at wide open throttle, pull out of the log, and let it rev for about 5 seconds, and shut it down at wide open throttle. Pull the plug, if it is a nice tan color, you're set correct on the high speed screw. Black indicates overly rich, white/grey=dangerously lean!
You might have the carb set perfect, and you just need to increase the idle speed. Better to be rich (1.25 or so turns out) on the low speed screw, than to be lean ( 1 turn or less than 1 turn out). You need to post up some more info - saw type and model, more about when it dies, what the throttle position is, how soon it dies, etc. etc. Hope it isn't the same gas that has been it since winter/spring?!?!?!