Fx impact safety not engaging.

here comes another problem. After fixing a regulator leak (i had to remove trigger assembly) i noticed that the trigger was all messed up , i could not feel the second stage anymore. Now after some tweaking of the screw it seems ok but the safety does not work . Can you give me any suggestions on what i have to do to try fixing the problem ? Thanks 
 
The small screw directly behind the second stage adjustment screw is the adjustment for the safety. I was playing around with trigger adjustment one day and wondered what that screw was for and I turned it a little bit and the safety would not engage ... turned it back and the safety worked right ... not sure where you are on that screw but turn it is 1/4 turn increments until you get your safety back. Yeah, seems like a lot of people who do adjustments on the trigger end up losing the first stage.