I have an Air Venturi 4500 compressor, the big one not Nomad, that lasted 5 hours. Of course just out of warranty but I’d still fix it myself cuz cost of shipping. Both cylinders have score lines and pistons are scuffed, rings have lines in them, intake reed valve has crusty rust on it, and low pressure cylinder bore is stained like it had been underwater. I’m big on oil changes so it’s not like I abused it, always ran 3-4 minutes after filling great white. It just started pumping slower and slower until it got really pathetic, more and more oil smell and vapor in the air. Does anyone know where I can get parts? PA is no help. Easy enough to fix if I can get parts.