Cometa 400 Fenix questions :)

[Vito]

Hello everyone

I have a couple of questions, related to the rifle, mentioned in the thread title.
Now, if anything related to my questions, has already been answered, please point me to the right place/thread on the forum.

The thing is that I bought the Cometa 400 Fenix, six years ago. Haven't replaced a thing (seals, piston, springs or anything else) since. Until a couple of months ago everything was left ''original''. I replaced the main spring about 4 months ago.
Everything was fine, until the point of 2000 pellets was exceeded. Now, I can hear a loud, metalic ''cling'' almost everytime I shoot my rifle. And it also vibrates quite hard when fired. What could be the cause of such ''behavior'' and what should I absolutely replace after 6 years?

Thank you for answering.
Best, Vito

[Deallad]

Some of the replacement springs are much stronger and cause damage to the gun, mainly the Ox main springs, I fitted one to a BSA Air sporter many years ago and on testing found it went up to 18ft lb.

I would guess some kind of bushing to stop the piston crashing into the end of travel

Mike