From British bikes many a mechanic was made. The wall thickness on the Amals is already on the thin side. We're talking only a couple of thousands to true things up for those who might be wondering.
I had thought that some kind of coating on the slide would work. I had considered plating the slide. Amal did have replacement chromed slides but these were recalled as the chrome had the bad habit of flaking off. The new Premier carbs have anodized slides. The problem of course is that the bore is now oversized due to wear.
Thanks Frank