Thanks, James. I thought I might have to mark it to keep it in balance. Any thoughts on the noise or do you think it is unrelated?

I have a 1998 Disco 1 TDI 300 auto. I have just had it's MOT and needed to clean up the handbrake drum so removed the rear prop shaft to do this. Pretty sure I marked the positions correctly at both ends. At the same time I replaced the rubber doughnut linking to the rear diff, with a genuine...