Hey, I have a problem with my new 2001 pgp. I was playing at a nearby arena and had set my gun down, some 10 year old knocked it off of the table it was on. I immediately noticed that the rear sight was broken and talked to the kid then he left. I later went to gas up my gun and found that the gun would not cock with co2 in it. I have removed the safety from the gun and have lost the tinny ball bearing and spring in the trigger assembly. I have had the entire gun apart and I think everything is fine except I cannot get the cartridge style valve out. Also I got a larger velocity spring and had trimmed it down, with the larger spring in I was able to get the gun to cock about once every 10 tries. I am wondering what could be wrong with it. I would send it away but I am entered in a tournament in 2 weeks and would like it for then. Lastly the gun is only 1 month old so it is still under warranty how is Sheridan for repairs and do you know if I will have to pay shipping.