u/Shot-Remove4065

Hi , Need help with the prv of a tippmann tipx , i was having a leak , so I take it apart and change some parts and the leak stop , i open the prv to se and change the orings if necessery but now i cannot put the prv to fire properly, i put a new co2 and air comes out the prv only in the last shots the gun fire and the co2 is out, i know i need adjust the prv but i need help i try but I cant put in the right place for not to leak from the screw of the prv

Hello I have a tippmann tipx , and i bought the parts kit because the pistol was with a leak , i fixed the leak by taking it apart and change some orings around the gun , the tipx now dont leak but still dont shot good , now my problem is another one.
I put the co2 in and click , the gun dont leak , but when i pull the trigger the gun dont shot , it realeses small co2 from the Back part , i feel co2 realesing from the screw adjuster from the Back ( but dont know if Its from their ), i pull the trigger like 10 times same thing when there is only co2 for like 5 shots the gun start shotting but after 4 5 shots the co2 is out.
I dont understand whats wrong , i saw another post Here that talked about a valve bushing , gold color , that needs to be alight with the hole i fixed that too but the gun stays the same