I have sprayed a bit of wd40 in the glass breaker hole and blew it our thoroughly with the air conpressor...a few times if it's coming out black. Work the action over and over during this process.Well I took the glass breaker off and used compressed air and put a drop of oil on it,and still the same thing. Is this a common problem?
Once the action is right again, then place the one drop of oil in place and rework the action. Wipe exterior clean.