I have a Taipan Vet II tactical 550mm .22 that I bought from a non-US store. I shot around 100+ pellets through it and everything was fine. Then, on a shot I guess I inadvertently hit the cocking arm with my hand and it was 1/2 way open when I fired the next shot. The air blew out the back at the pellet probe. I was able to clear the pellet with the next shot, but then put the gun down for a while. 15 minutes later I load a round and pull the trigger and just the trigger click. The tank pressure guage showed 0 bar. I filled it up to 250 bar. It took many times longer for it to fill... I just thought since it was down to zero that was why. Then I cleared the pellet - it shot out fine or should I say normal and I thought I was good. 10-15 minutes later no air again. So I filled it up to about 180 bar and tried to determine where the air was leaking. Nothing out the barrel and nothing back by the pellet probe. I could hear no air escaping. I haven't put fluid on the possible spots yet but wanted to ask if anyone has had this problem in the past and what did they do to correct it? I tried to send it back to the dealer, but our friendly USPS would not ship it and it got returned.