Les, seems I owe you an apology too, for supplying poor paint info...Sigh! I automatically defer to Arwyn`s thinking given the degree of his experience, Morgan and otherwise.
I would only add that I have made use of the smooth version of Hammerite without issue for a number of years and would not have suggested it`s use had I not found it to be an effective easy to use paint.
I had used the original hammered enamel finish and found that certainly created a pinhole effect to the extent that in time little dots of rust could poke through, which is why I baulked at the idea of you possibly using that type of finish..
Hope your choices work out well for you Les.
