Hope the FEP community is still out there, tried several troubleshooting steps from all the forum posts and can't get it resolved....
Dust Olive Quest is massively leaking down barrel. Was working just last week, until 2 minutes into the first game, a slow leak down barrel. After a few shots, major leak down barrel, goes through 4500 tank in seconds.
Tried the following:
1. Backed out HPR and LPR screws to flush. Screw in nitrogen tank, turned HPR screw in 3 past flush. Slowly screwed in LPR, and immediately air leaks down barrel. A lot. Try to screw in LPR enough for bolt to cycle, and will fire, but leak continues until all tank empties in less than 30 seconds.
2. Replaced ALL Bolt and Bolt Pin O-Rings. Applied Hater Sauce liberally to bolt and bolt pin o rings. Bolt shows no physical damage minus some small scuffs at front of bolt since gun was purchased
3. Replaced all HPR and LPR o-rings, including between upper frame and LPR housing.
4. Replaced LPR valve core with new "volvo" schrader valve. (have not replaced HPR valve, however swapping out HPR with another reg produced same leak)
5. Fresh battery
Anyone have any ideas what's left to check or do?