I bought this 8 months ago as a refurbished unit from Pyramid Air, it's only had light use since then. When I got it it had the scuffs and missing cover screw that you see now. A couple weeks ago it started to fill slower than usual and I performed a full maintenance, including replacing the high pressure piston and medium pressure rings. It still fills slower than it should, sometimes not filling to more than 2,000 or 3,000 psi. I'm guessing one of the check valves needs to be replaced (spares are included). I've since bought a new compressor. I'd like $400.00 paid with PayPal "Friends and Family" (or you pay the 3% fee) plus the cost of shipping. I'm located in Virginia.