remove the lpr, and clean/replace the.... um..... white piece... to my knowledge, that's the only thing that would cause that leak. taking off the hose is tricky though, id have spare hose laying around before trying. good luck
not to sound like a smart ... well.... but did you cock it before airing it up?
Lol its fine. I cocked it before airing it up and when i aired it up it was fine. Then i shot and it only came back half way. It started leaking again right after i pulled the trigger.