Neither saw has had ethanol gas in it. An electric saw is on my list, but not as a 3rd saw.
The biggest reason this saw hasn't been used much is because of the way it runs. It actually is harder to start than my 590 for some reason.
They can be finicky beasts.
Too much air coming into a compromised carb seal, perforated fuel lines that you can't see w your eyes, minute, microscopic dirt particles in carb plumbing, weak or faulty spark availability.
Truth be told, I seldom messed with my saws when logging. They either worked or didn't as I didn't have the time to ascertain the problems.
I went to the saw shop, bought another one and left the problem saw there. Upon pick up, he would proceed to tell me what was wrong and it didn't even go in one ear.
It was like when my wife, as a newly wed asked "wouldn't you like to have kids one day".
I said " yeah... I can do one day".
That's how much time I gave a fussy saw.
She made me keep the kids however.