I had to replace the piston, sleeve, and ring on my craftsman oil-less twice in 3 yrs.
Then the valveplate decided to chip itself so it wouldn’t build more than 30psi. Replaced that, and now after three years I’ve spent almost as much as the damn thing cost me new just in maintainence. REDICULOUS. the sleeve/ring/piston was about $60, and the valve plate was $40
I bought a second-hand HF oil-based compressor, and smoked the electric motor that spins the pump. so now I’m back to the loud-ass craftsman that I hate.