I have replaced the carburetors on 80% of my equipment now. On one piece of equipment, the engine didn't cost much more than the carburetor, so the engine got replaced. I'm sure the manufacture of that engine used a fair bit of energy. I had two carburetors go in one week due to ethanol gas. It's amazing how fast it can ruin a carburetor, just a few minutes.
If there was good equipment that ran on propane or cng (with home base filling unit), I would be all over it. I'm really sick of this so called gasoline, and where I live, that's all we have for 400 miles.