The Senior I bought off Crusader arrived yesterday. It is in fair nick, apart from a broken grip and some bad rusting pitting on the grip frame and end cap. I think that maybe the gun had a damp rag left on it at some point?
Anyhow, I tried a few shots and it felt like it had a lot of dry grease in it, although it did shoot ok.
It has been stripped, cleaned and lubed today. The piston was a swine to get out because of the old dry grease. Anyhow it came apart and I cleaned the bits up with meths. I took the piston ring of and cleaned out the groove.
The gun was lubricated with Gn paste, a little LT2 and a drop of SM50 for under the ring and to help the piston get started in the cylinder. There were no bad burrs on the trigger,sear or housing and they had Gn paste put on them.
Back together and plinking well