Fx maverick leaking past 170 bar

Hi everyone i need help understanding this problem i own a maverick. 25 sniper for 15 months had no problems till last week i noticed when i am filling the tank past 170 bar starts leaking badly from the atmospheric hole the that is behind the second regulator. Yes i did resealed both regs whit the kit that was bought from huma i did check the inside where all o rings make contact to wall of the housing . The third time i changed the o rings it did hold for 30 minutes on 200 bar though but then made it again all the air that was inside came out in few seconds the mystery part is that when i opened everything aĺl the o rings associated with the regulators looking intact if anyone experienced this problem and those know how to fix it please it will be grateful because i hate the thought of sending the gun .
 
I’m watching this as I wonder too. I haven’t had problems yet but it’s inevitable with orings. I will say I have read many accounts of unsuccessful re seals of amp regulators. Must be some trick to it.
On my Wildcat MK III BT, I had to changed to brass piston of the reg before finally resolving reseals issues. And that was after couple of times swapping the regs o rings.
 
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