My 2 week old 25mm f1.8 lens from the Olympus refurb outlet sometimes refuses to auto focus on the subject, even in brightly lit, high contrast situations with S-AF. It would just hunt for the focus for 1-2 seconds before settling on the closest focal length or out to infinity. Removing and reattaching the lens seems to fix the issue until I turn the camera (an em10ii) off, but the issue always comes back after its turned on again. I'm guessing its an issue with the 25mm itself, as this doesn't happen at all with the 14-42 EZ, 17mm f1.8, or 35-100mm f4-5.6 lenses I have. Is this a common issue with the 25mm (or with lenses in general)? Is there an easy fix for it? Or could it be a camera/user error? I was thinking of sending it back for servicing, but since I don't have a second body to test the lens with, I'm not sure how reproducible the problem is.