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Are you guys replacing broken/stripped bolts with the same sized fine thread bolts, or are you switching to coarse? Fine thread are much harder to find off the shelf, although I do have a Fastenal fairly close. Sometimes they only offer stuff in large quantities, and they close at 5. I assume the military spec'd fine thread for the holding power to resist loosening from vibriation since there aren't a lot of lock washers on a lot of the body bolts. But with thread lock I'm wondering if it will matter if I just use course thread bolts. They'll be a lot easier to find in the same size. Have any of you done this? Are you noticing any problems with loose bolts? I'm going for a retro Vietnam era look, but I'm not going for museum quality resto.