I have an old compressor that I bought and would like to identify it so I can order a rebuild kit. The compressor only has L50A stamped on it. There are no other identifying markings. It will pump air, but oil seems to leak out of the breather tube hole on top of pulley shaft. I would like to know the CFM,and know if the 2 hp. 3450 rpm motor coupled to it is a good match.