I have a daisy air rifle that is not working properly, and I would like to be able to order parts for this unit. It is a power line 853/853-C style. Unit will not hold compressed air. Now I already have a schematic for it and pretty much figured out what may be wrong, just need to be able to locate parts for it. Or is the gun not worth fixing, that maybe money spent could have bought a new one. Thanks for any reply's.. royce