Have any idea why it was parked ??
Those old units were known for the intake valves tightening up and the main jet needle rattling out of spec, making them run rich.... Occasional ignition box issues. Myself, I abandoned compression tests as diagnosis about 25 years ago. Engines which I am unfamiliar with, I pull a cylinder leakage test to see where I am at for a foundation, before diagnosing it's issues any farther.. Lets me know what I am up against other than carb or electrical issues which may be at hand
~ Gimpster ~
Not all winners are heros
Honda Pro Wrench - Red Level Certification