While I get over the shock that my Leica R4S with motor winder sold for only $90 including shipping, I can console myself with the 50mm/f.2 Leica lens that I kept.
I purchased a Leica R to EOS adapter (http://www.adorama.com/CZLCEOS.html) and, like others, find that it fits rather loosely on the lens. What's not obvious is how to firm it up. I was thinking a bit of electrical tape neatly applied between the lens and adapter. Any suggestions would be most appreciated.