Well, let me be the first to ask for pics. I believe you are referring to the keeper. The small, diamond shaped piece on the pommel which the end of the tang should be peened over. If that's the case, this isn't too rare for khukuri of any make from what i've seen. It seems to be an issue of construction method. Sometimes the peening job just doesn't move enough metal and it gives under shock. Hopefully someone with personal experience will chime in, but from what I've read, it can be fixed pretty easily. If you can get the kepper back over the tang, I believe you would get some good epoxy coverage in the area, replace the keeper, then re-peen the tang carefully. I haven't done it, but it sounds simple (famous last words right). Pics will certainly help. Any khuk can have this issue, except the ASTK, which has no butt plate, and isn't indicative of strength. The warranty for a Gelbu may not cover heavy field use, but they have been used for such with success. I personally wouldn't worry about your khuk after repairing this keeper issue. Good luck and please document your repair as it helps to have the info available for others.