if its not responsive to all your settings...and the saw is warm with a clean filter and screens, then it sounds like the carbs screwed. I was just in Drayton working gas n oil in November as thats where the money is in the winter.
IT could be freezing up too. if it comes out of a warm shop and rides in the back of a truck it will likley freeze.
without a heated carb such as a 372 xpg then its always a good idea to leave it outside,don't put it by a fire or especially a vehicle tail pipe as its full of moisture. (use Iso for saw, throttle ect.)
the best way to adapt it back is to has a full tank and the second you step outside, fire it up and keep it running on route or for a while (stuff likely you know?)