Quote Originally Posted by Shed tuner View Post
yes it would, whichever is easier... but I seem to recall I didn't do that on mine for some reason - I can only guess that the guide was either fixed, or had some annoying size / machining to the rear... eather trhat, or I just got lucky finding a spring that fitted and went with the simplest solution ?! Who knows, it was years ago

However, even the std spring rattled around inside the piston, so you need a sleeve regardless...
You were right it is a fixed guide Anyway I had the day spare so went for it !

I stripped it fully and DID use expanding foam I checked a few specs and used a B3 grade expanding polyurethane foam. I kept a few "blow holes" clear as it cured and dripped warm water in the blow holes to make sure the foam cured all the way through fast !
It worked better than I could have hoped !!! sorted !

I changed the piston ring, degreased everthing. Made a plastic "oil bottle" spring guide with internal "slip" washer.

Next as no way to get a suitable spring today or make new guide, I resorted to the good old Maccari tar, but only all over the spring guide end!
bit of moly here and there and a smear of some silicon stuff hanging round.

All back together and like a different gun !
Thank you for giveing the tips and causing a happy day !