Umarex Notos - Bubbles on regulator, and other questions

[kopi]

Hey Everyone!

So I did something kind of stupid and had to tear my Notos down. I have some questions

• When i removed the air tube I noticed there were bubbles (see pic), should this be a concern? I removed the regulator and the air tube seemed dry, just lubed.
• There is a lot of oil/lube on this thing, should I wipe it off and reapply? If yes what kind of lube/oil should I use?
• I was attempting to turn down the regulator while I had it out to get more shots. The nut holding the adjustment screw in place seem really really tight, is that normal? Should I just try to man handle it to break it lose?
• While I have it apart, is there any maintenance I should do or clean up? I don't really need more power, and this thing is only 2 weeks old brand new...

Also noticed that one of the barrel o rings are nicked, so might as well order a c88 plenum kit to get more air and a thread on this thing since I destroyed the moderator...

Thank you in advanced!