I just received a Schneider Kreuznach 25mm/f1.4 C mount lens for my future E-P1 in the mail. I bought it from an eBay seller that I saw mentioned on this forum and who frequently has a very large choice of lenses. However, the focus ring is extremely stiff. I don't have a camera to mount it on, but trying to turn it off-camera, it's extremely hard to get it from infinity to closest focus and back. Somewhere halfway, it gets really stiff.
I don't think the problem is caused by a knock: it was very well wrapped and cosmetically as well as optically, it looks really good. I'm quite sure it'd make a good lens, so I'm reluctant to ask my money back.
Is this a lens that should get a CLA to make it perfect ? Is this something I could do myself, and if so, what do I need ? If not, does anybody know a good repair shop in Belgium ?