I've been working with a foundry here in Oz about 8 hours drive from home that is going to make me some new D35 rollers but after 2 years I still haven't got one in my hand because they are so busy on other work, it would cost a lot of money to ship them to the USA so I hope you find something there that will work, I'll be in the area of that foundry in Feb going to a James Taylor concert so I'll contact them and see if any progress has been made.
Good luck
Mike
It doesn't matter really which type of roller but if I put the field changeover type I would need 4 to match I would assume are those ones the rear post with the raised center? Thanks Jason