Question for Seabass

I have just bought a jg bar 10, not G-spec version. I put it together and I noticed after awhile that when I move it from side to side I can hear the sound of a spring or somthing moving around inside. Does your gun do this? Also my bbs are curving to the right. Is this a problem with the hop up. I am using G&G 28g bbs. I haven't cleaned it since I got it, could that be the problem. Thanks for any help you can give me.
/Viper/

Just a warning - it may take Seabass a little while to respond, as he hasn't had access to the internet for a while now. Hopefully soon!!