Hi Attim, how do you like the 135 DC?
I happen to bought one from Japan last year and it was mint. After trying it out, I understand the reason why many of this lens didn't get much use - the focus shift is profuse even with stationary object. The only advantage it has is the f-stop stay constant, unlike some design which use 2 aperture rings.
With the effortless digital PP we currently have, it is hard to justify the price of CAD $1,700 plus tax for a new one.