Haha, yeah I think it sensed I was going north and decided to give up the ghost.
When I took the power head out of the case, I did replace the oil line (green) that runs to the crank case, added a new air filter, and fuel filter. Ddn't touch anything else as it all looked good. But that's when I noticed both duck-bills were missing, but didn't seem to affect operation. The saw started & ran. Fast-forward a week and I put the duckbills (only) in, now it don't run. It will fire, and run for a sec, but won't stay running.
To be fare, appearances can be deceiving. Yes it looks like it was serviced not too long ago, but I don't know if that was 5, 10, 15yr ago. The fuel lines were not stock, that much I know. But what I do know is the saw was still sitting for a good while. Its entirely possible the carb is just reacting to a aged diaphragm and/or varnish. And could just be mere coincidence when I came along and fired it up ran it, could of been a catalyst finish it off.
I have the parts, I might as well just pull the carb and see what's up, rebuild it