Gents just a reminder to be
cautious using stainless fasteners on aluminum panels .
Good point, which I am well aware of - and I will inspect (and report!) from time to time. As I said I have applied some anti-corrosive paste (perhaps ACF50 is a good idea?) on each screw. The screws I have put in have a smaller diameter than the original coach bolts, so hopefully there is not much - if any - contact between the SS of the screw and the alu of the running board. The most SS/alu contact will be between the screw head and the alu strip, and that should be easy to observe. We'll see.
If there are signs of corrosion I will consider monel pop rivets, meant for sailing boat rigs. I have found them with a diameter of 3,2 mm, so it should be possible. Not so keen on riveting though, not the gentlest of tools.
