Stewmac invited me to write a review on the Zero Glide Nuts last night so I did, after I submitted my review I had to wait for it to be moderated,not sure if they have posted my review yet though, I gave it a rating of two stars out of five.
And you're absolutely right about it mate, I might see if I can get the dimensions of the original nut and pm them to you so I can order a bone nut if you're able to make one for us, maybe that's what I should have done in hindsight.
Actually, if I were to order one of the Bone Nut upgrades for LP kits what are the chances that it would fit in the nut trench on my LP Studio?, I think the nut trench is about 5mm wide.
Update:
I just checked on the Stewmac webpage and they still haven't posted the review I submitted last night.