Picked up a very nice Evanix Blizzard. Sitting for a few years. Last shot and then all the air bled out and won't hold air.Seller said he shot & then all the air hissed out of the rifle and it would pump back up. Who works on them now? Or, how easy is it to take apart and see if grit or something can be cleaned out to get it going again?Too beautiful to let sit.Sorry, did not see that my first effort on searching and asking about this actually posted. So - asking twice, maybe it will be lucky for me?