Hw90 Issue

[Lancashire Hunter 22]

Hi guys had my hw90 serviced about 4 months ago it was used a good few times but has been stood for about 2 and bit months with out use.

Got it down yesterday to have a play in my garden set up a few targets the zero had dropped by about 2-3 inch and was right of zero by 2 inch and is no longer striking the target as hard as it was and the pellet isnt getting deformed. Now my question is is it possable for it loose its pressure through being stood for 2 months or was something missed from when it was serviced?

[toby63 1,236]

could be the gas ram leaking

[Lancashire Hunter 22]

Thats what i thought but when cocking the barrel the pull down on the barrel feels the same so it doesnt feel like there is a loss of pressure i rang the guy who serviced it and he said to drop it in with him just hope its not going to hit me hard on the pocket. Thanks mate.