Help Please need parts

[B2Kbushy]

ok so i recently had a malfunction in my b2k which required me to COMPLETLY disassemble my b2k bushmaster which i might add is not easy, but none the less i got it all back to the way it was supposed to be and then i dry fired it and i got my velocity back but now i have a leak in my silenoid and its a square gasket that is leaking and i need to know where to get one or a gasket set that includes it or something like that would be helpful, PLEASE HELP i love this marker and i am not ready to hang it up on my retired wall