I have a 4910 here that looks very good out of the box, nothing has changed over the last 50 hours or so. Did he definitely have it focused correctly? I turn off the image pattern which allows for a clean focus once you turn off e-shift. it seems impossible to focus it correctly otherwise. They should still fix this in a firmware update since this workaround doesn't help when trying to adjust the convergence (e-shift is stuck on)
Focus was set correctly an he has not toched it after our test, the owner does not understand what has happened??