Martin,
I have 2 of the CSD061 R/C motors but as yet havent run them, but the fits and finish seem to be quite good. I purchased mine from Bill Hughes and they are from the first batch.
I hope your right on the MP Jet061 being remade, I just obtained one from Jiri Kalina via the auction site, mines a plain bearing/bushed C/L version and now would like a BB R/C or 2 as there very well made units.
Stewart