I sent my Gk1 back to New England Air because it wouldn’t take air, last Saturday their tech called me and said the valve had jammed, that it was not user error and it sometimes happens, the pistol was now working great. I received it today, it had no air in it, I tried to fill it with air and it wouldn’t fio. I checked my compressor and it’s fine, I use two differnt fill probes, no success. I contacted John at NEA, he said to take the back off and push the cylinder all the way forward, i did that and it still won’t take air. I do not feel any air coming out of the barrel or anywhere else. Has anyone else had this problem?7