So my 1993 Craftsman air compressor blew the piston ring a few days ago so I took it apart and am wondering if I should replace the cylinder too, or if replacing the ring itself would be enough? I'm not sure how long the new ring would last with this amount of teflon rubbed off. Maybe it's not that big of a deal. The ring is only $10, whereas the whole cylinder kit is around $50, so it's a bit of a jump in price. I don't use the compressor a ton, mostly for HVLP a few hours every 3-4 months when I get a new project going.