I've notice over the pass few days that when filling my pcp I'm only getting 150bar,I was getting 190bar but this has been slowly dropping till 150bar
The rifle is 510Extra .22
Has anyone any ideas why this has happen the gun is only 3 months old?

Many thanks the information supplied is very help full. I was finding that the adjusting screw moved when a number of shots was fired through the rifle. The adjusting level was being held in place during the shoot today by electric tape !! Screw didn't move.

Is there any update on this query,as I would be interested in knowing how theses seals are fitted