Posted 17 March 2012 - 10:59 PM
I just got a new ZT3 and I noticed this too. It seems to me it's not a matter of "softness" but rather, these 'jaw height' screws weren't machined properly and the female hex heads are a little too big. I asked Gibson for new ones because the "B" jaw height screw is beginning to wedge and strip and I assume the others will follow. The 5/64" (I think that's the size) hex wrench fits fine in the Combo Headpiece set screws (for the plain ends of single ball strings) and the tops of the 40:1 tuners, so it's not the wrench. The next hex wrench size up in English (3/32") and Metric (2.5mm) measurements are too big. I'll see if the new ones will show any improvement. Maybe this will be fixed on the ZT4!! In the mean time, the best thing to do is hold the wrench at a slightly lower angle to try and take up the extra space inside the hex head while turning and to take it REAL slow.