Probably not by you, but by the shop, maybe. It sounds like the needle was bent and lost it's seal. Crosman has repair stations, if they don't fix it, they will send you another one. I have sent them guns before and got brand new ones instead of the old piece of junk I sent them for repair. They also bought out Sheridan/ Benjamin line of Air rifles, And they repair all those too. I sent them an ancient rifle, an old Benjamin Franklin,17 cal. bare bones stock and barrel only, they sent me back a total refurbish, welded, painted, new .22 cal.barrel, all new guts, unbelievable. I think the total cost was $35 on that one. They wanted $15 for paint, I told them I didn't want it painted, they said, OK, Get a hold of them. Hope this helps.