Hi locky, yes used it without issues, I've had it apart , cleaned and filled with diff oil (all looked perfect inside) I did put 30000 in the centre diff ? I did wonder if I have something slightly off on the level of the diff/spur and it's causing it to be hard work but when I say it sounds awful it really does , yes it's a mod 1 pinion, I'm thinking of stripping it all back off and starting again , put thinner diff oil in, chop that 3rd leg on mount so it all sits flat instead of having to build uo the mount level to match , anything else you can think of , thabks for replying , appreciate it