"this crappy gas has not been good for it."
~~~~~~~~~~~
For sure!
Also, when done with the rig, pour all gas/mixture out then run it dry.
When I had my service business, I'd buy 20 -30 tank fuel lines and filters.
We changed them annually (around Christmas when work was slow) - also, a new in-tank fuel filter at the tank end of the fuel hose.
'Had to give the good employees something to do.
This gas would turn those fuel lines to mush eventually - they'd either collapse or incur holes.
Preventive maintenance to avoid work-stoppage in the field.
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One more: keep the carb butterfly shaft clean of micro-junk. We just shot them with carb cleaner now/then.
The dust (micro-junk) will eventually wear on that shaft and it'll suck air.
Cleaning filter goes w/o saying.
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Happy Smokin'.
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PS One year I cut the toe off old white socks then slid them over a few of the carbs, poked a hole for the throttle cable, then saturated the sock with WD-40.
They stayed remarkably clean.