hey guys, i just received a kwa sr-10 from another member on this forum, and the gun isnt shooting. The gearbox cycles perfectly fine, and it seems to release enough air to push a bb like its supposed (i compared it to my other m4) but for some reason when i close it, it seems like no air is coming out of the barrel, and 1 out of every 10 or so shots, one or two bb's will fly out and fall about 5ft infront of me. I dont know really anything about kwa's but i would like some advice or solutions if anyone knows any. I took out the hop up, lubed it, switched the buckings and barrel, and nothing, same ole problem, and for some reason, idk if this is for kwa's but when i compared the air nozzles, the nozzle's tube in the kwa is about half the size of the one that is on my g&p, is this just the design of the kwa's or could some one have cut it, even though when you look at it, it doesnt seem cut, unless it was done with extreme precision, i could post of a pic of it, if anyone requests it. But yeah please help me!