My first post in years.
But what I have always done is spaced out the holes evenly with a pin or marker, drilled the holes with the correct size drill bit, made sure they fit correctly and adjusted as needed, paint the gauntlet, and then just used any 2-3 min epoxy I had on hand. 10 years later my first set of gauntlets still have the darts on them even if the rest of it is falling apart.