Valve Spring Retainer Problems, help please?

hi guys, thank you for the replies – i have looked into leupys shop. but he told me he no longer wants to deal with people in the uk anymore, so i gave up that route – do you know of anyone else that ships/makes custom parts for the uk please? and now to the main problem i wondered if anybody could help me out. my air cylinder on my stealth dumped all its air recently, i managed to drain the air bottle and get the valve out, and i fitted a new o-ring but i didnt take notice of the original setting of the valve spring retainer. so i was wondering if anybody here knows it?

its shooting is currently very erratic with the power raising the more shots i take, has anyone here experienced that? if this is not the place to ask this question i apoligise, im just at a loss 🙁

edit: typo’s