Morgan use horrible mild steel coach bolts. The easy solution is to remove them and replace with pop-rivets. They' don't react against the running strips, are easy to install and are out of sight. In addition, easy to remove with a drill.
Can't understand why they still use those coach bolts as screwing nuts takes time.
Brilliant answer...
Aluminium to Aluminium and not goint to come lose in a hurry...
As you say, using pop rivits would save time, eliminate possible corrosion and generally be a better way.