EDgun Edgun Matador problem

The problem is that being one of the first models, there is not much information on the web. I've had it for over 10 years and I've never had it serviced. After doing it a few days ago, and not having found anything wrong, I put it back together and found that the release valve is leaking and does not raise pressure. I suppose that the Teflon seat, after all these years, was marked and when I put it back together the position does not match. What a bad idea I had. I really didn't think it would be that difficult to find the replacement. Thank you
 
Other parts available for that rifle as well.


Other parts available for that rifle as well.

Other parts available for that rifle as well.

Thanks for the information, I'll try asking tomorrow. Compared to the one in the photo, mine measures 58.55mm for the metal part and 50.31mm for the Teflon part.