Newps wrote:
It's a Lycoming, compression is always good. You need to check the cam.
Lyc's lose their cams without use.

Believe me, the compressions were great on my engine up until the time
the cylinder blew. As Newps says, you need to take a look inside.
I'd particularly be worried about corrosion (cam and cyl) on an engine
that flies infrequently.