@rhwestfall and @Nemrod , dang, I knew you guys were going to say that about the snap rings, but I was hoping the star retainer might work. I'll get the new filter/ring from scuba museum. I need other parts as well. Band clamp, mouthpiece valves, duckbill, service kit, etc.
If TSM has the duckbill eliminators in stock instead then do yourself a favor and forget duckbills.