You're supposed to mount the bolts with the stays outside the guard, I believe. Not sure if it's that important, but I reckon the sides of the draw bolt are a bit weak to take all the weight of the guard under a lot of wobble (I know this as I have broken a draw bolt from overtightening it). The very flat thin hex nut is so thin so it doesn't foul the tyre easily.
You're supposed to mount the bolts with the stays outside the guard, I believe. Not sure if it's that important, but I reckon the sides of the draw bolt are a bit weak to take all the weight of the guard under a lot of wobble (I know this as I have broken a draw bolt from overtightening it). The very flat thin hex nut is so thin so it doesn't foul the tyre easily.