All good resources for the rings, Oh and I worked for Egge until recently. I also may have them but Dave at Otto Gas has alot more inventory than I have or ever will have, LOL. Hasting may have them , you can look them up by dimension here https://apacatalog.com/HastingsCatalog/Home/sizesearch...
I worked for a company for many years that made piston for Devillblis. I dont know anything about you compressor but, if you give the dimensions I(can see if I have them or can get them. If I cant I can refer you to another company that may be able to supply them I need:
bore diameter
ring land...