Hello, I just got an ICS Komodo and I'm already facing an issue. I fire a few rounds and everything is perfect. But when I stop shooting and tilt the gun down, a BB rolls down the barrel. I didn't make any mods. I already stripped the hop up unit and everything looks normal. The nub is in place and the bucking isn't torn. I haven't noticed if after the BB rolls down I get a dry shot. I already tested the bucking to see if a BB would just slip through it by placing a BB on top of its entrance. What on Earth could be causing this? Thanks.