minimag leaks befor the shot. why?

[pbbrain]

My minimag leaks as i squeez the trigger. If I squeez it slow enough there is no air left
to do more than let the ball roll out the end of the barrel . Can someone please tell me how
to fix this. Thanks ! pbbrain

[Coralis]

probably need to change the Oring in the power tube, the one under the spacer

[pbbrain]

Thank you

probably need to change the Oring in the power tube, the one under the spacer

That worked ! I put the new oring in and problem gone ! Thanks !