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I would also be concerned with the gas you are using. A small amount of moisture in gas will cause pump gas with alcohol to separate. It will collect in bowl of carburetor and engine will not run on it unless the choke is pulled in most cases. If you wash the machine, it is easy to get a small amount in the fuel cap vent. One should always cover it during washes. You can drain some gas into a clear jar to see what you have and if it’s separating. I don’t know if I would put much faith in the compression test with the ACR on these engines. Oil consumption is a better sign of cylinder condition. A head gasket is pretty cheap and one gets to look at cylinder, piston top, and valves as well as a good decarboning while in there. Good luck with the hunt for your problem.
