When I am taking photos mostly in IA, the menu screen keeps appearing on the monitor and I have to press the OK button to get rid of it. I think it may be something to do with the Mode Dial which could be slightly looser than it ought to be as I have used this camera quite heavily over seven years. I have just bought a Mk V but there seems to be a problem with the battery life on that one. Any ideas on the Mk I and whether it could be repaired.