I have one of these Peavey Grind 5 BXP basses that I bought used about a year ago. I did a complete electronics replacement on it (new pickups, active preamp, new pots, jack, wiring, etc) so I have some time and money invested at this point. I changed to slightly heavier strings, and as I expected, the neck had too much relief and needs an adjustment. So I unscrewed the truss rod access cover, and I can see the end of the truss rod just fine. But the head of the truss rod looks like it is nearly round. Either it's completely, utterly stripped beyond recognition, or it's not designed to take a standard hex key. It looks like there may be some smaller teeth in there, so I'm thinking it could be one of the other Torq configurations like double hex or something, but none of my standard hex wrenches would engage it. The bass is fairly new... it was only about 2 years old before I bought it off the guy, so I don't think it would already be stripped. But who knows. I'm thinking that maybe there is a different tool I should be using, but I don't know what that would be. Sadly, Peavey's website is no help whatsoever. Any ideas?