GRJ, You are definitely well beyond rookie status! More like teacher status to the rest of us around here.
Mike, the rollers I have were from Crest Electronics which seems to also be out of business now. I believe they were formerly Aristo-Craft before becoming Crest. Bacharus was another one that made rollers, but I just saw somewhere while searching that the owner retired and was no longer making rollers. Looks like Bachrus is now out of business as well.
Seems JAK or Micro-Mark is about all that's left for stand alone rollers at somewhat affordable pricing (less than $100 anyway).