Ok, I've tried several metric bolts, but so far no match. I thought it looked like a 12mm, but neither coarse nor fine threads will go in. Is it 10mm? I've looked on MM's web site and the owners manual, with no luck. And I don't know if different models have different size requirements, mine is the E16.
Ideally, I'm looking for something that will thread in from the bottom, that has an allen hex recessed in the top of the bolt so that adjustments can be made from the top. Any ideas? McMaster-Carr didn't show anything, and a quick Google search showed some nice devices, but none with the Allen wrench adustability. I will probably have to make my own, but prefer to have the vibration resistant feet that are available. TIA for any information or leads you can help with! Jim.