Re: chrome covers or black plastic covers for SD Trembucker
I think you're making too much of a fuss about the nickel plating. The plating is extremely thin and the fact that it's nickel is not much of a problem. Brass, now, that's a problem. Nickel? Not so much.
I haven't seen a chrome trembucker cover, though, only nickel. And nickel as a plating, is fine.
It's not just, by the way, that the spacing is odd. it's that the entire TB bobbin is wider than regular bobbins. that's why it's so ny impossible to find covers, other than what SD makes.