Having a weird issue sometimes where images seem to be decentered in focus. What I mean is that either the right side or the left side of the frame are sharp. Has anyone experienced this before? Even at apertures like F5.6 I'm also finding that if I bump the zoom ring after locking focus the image will be completely out of focus. I haven't experienced this on other camera's from Canon for example. Is this just a thing? For example on my Canon body I can zoom in focus and zoom out and still be sharp, on my EM10 II this is not the case. Any feedback and thoughts on these issues? I purchased the lens refurbished from Olympus.