I just received my new Vulcan 2 in .25 caliber. Today was my first outing with it. Went to the range, got it sighted in at 25, then moved to 50 yards. I shot several groups with it before the problem started. When I pull the trigger it does not fire. I am being careful to cock it all the way to the rear and forward. I can see the trigger reset. But when I pull, nothing. I then pull the magazine out, and it will fire the pellet in the barrel. Then it may shoot good for another three or four pellets and then it will not fire. I pull the magazine out and it will fire. I was playing with it tonight and it fired proper for about 7 pellets, then a no fire. I also noticed that I could get it to fire if I pulled the handle back and forward again (after being cocked already) and in doing so it felt to already be cocked. It would then fire. This is my first PCP and I'm confused as to what the problem is. The gun is brand new, has a two year warranty, but I hate to have to send it back for repair. Any ideas??