I own a mini commander, its a great knife but one thing that upsetting is the bolt pivot. No matter what I do the pivot bolt loosens up after a few uses during the day. Is there anyone out there that can help me with this problem. It's quite annoying for the price I paid for this knife. Even if the tighten it up it will loosen past the sweet spot. Then the detent becomes horrible and too weak. Also there a whistle like sound when I open the knife or close it. NEED HELP!!!!