Air Venturi Nova Freedom with Bad Pump- What do I do with it?

If they have parts to fix the Aspen they have parts to fix the freedom. They're the same rifle.

Search this site for those two guns and you should find both the parts schematics and the size o-rings that you'll be replacing. Odds are you won't need special parts, just a source for the specific size rings.
I found the repair easy to do, you just need a clean space.

S97
Attached is a file titled Assembly Instructions
It is a multi-page pictorial and parts list for the Freedom/Aspen platform
Hope this helps
Edward

View attachment AssemblyForSenecaAspen.pdf