Hello Duane, I'am from Costa Rica, Central America, today my Gamo Compact could not charge air after twenty years of use. I assume the seals (parts 14760, 12540, and 22700) needs to be replaced.
You can download the diagram from here:
I have completely diassembled my pistol and I can say that it has been easy and uncomplicated. I wrote to Gamo USA about the spare parts I'll be needing and awaiting for their response.