Hi i have justed to noice a loud clunking noise from inside of the fns swivel on my disco one. I have turned the prop by hand and it has a small amount of play and the noise can be heard . Do you you think the cv joint is to blame and how easy is it to change ?

If it's a regular cracking sound as the wheel is turnibg that gets worse the more lock you have on then It probly is the CV joint. There not that difficult to change.