I have a old Weed Eater FL21 with a Walbro WA226 carb and I was given another FL21 that is slightly newer with a Zama C1U-W7C carb. How does the Zama C1U-W7C compare to the Walbro WA226 as far as having problems?
And don't pay extra hard earned money for pure gas.
As long as you take care of your equipment you will have no problems.
Oh, come on. Buying Ethanol-free gas for small yard gear is not an issue. Generally ethanol-free "pure" gas is no more expensive than premium. I have personal experience with very poor running and early failure of components using ethanol enriched fuel on my 2-cycle yard machines.
Have never had any problems.
I run 87 in everything. Running pure gas would cost me around $100 a week.