Does anyone have one of theseCarbon 15 Pistol ? I bought one around 8 months ago and it has been a jam-o-matic. It usually only shoots 1 round and then jams. I guess I need to send this into Bushmaster. Is their customer service good? I sent a Glock in for the "Upgrade" and they were great. Glock even sent me a check for my UPS costs. Will Bushmaster py for shipping both ways? I would bring it back to the dealer I bought it from but he went out of buisness. Any thoughts on what may be causing problems with this pistol?