Morning gentle folk. I have suddenly developed a whine that rises and falls with the revs so in front of the gear box in the drive chain. Sounds a bit like my Pan when I first got it new, a bit sewing machiney. The motor is being pulled for a rebuild shortly but I need the old girl for transport for the next couple of months. Has anyone experienced such a noise before a catastrophic engine failure? Quite high mileage 60+K miles, sounds like it's coming from the top end to me.... Ideas?