Hi all. I am currently building a big bed laser using V-Slot. I am having a problem with the T-Nuts. I am finding that over time these are loosening and causing me to have to re-tighten. Because some of these are in difficult location I sometimes have to disassemble sections to get to them. Mow in a few months I am planning to move interstate and I don't want to uncrate my Laser only to find a jumble of parts. So - what do you use to make sure things don't vibrate loose. Dave