Originally Posted by
dojj
so it's not a case of not having adjusted the cable properly then?
it's very very easy, just wind up the 2 big plastic nuts and away you go

I was thinking this but would it explain why only one side is not working? Because putting the handbrake moves both mechanisms the same amount?
I did look at the adjuster this evening and it doesn't really want to turn any more. Doesn't help that the exhaust is in the way but it's almost like turning the large nut thing is trying to turn the cable, there's a fair bit of tension there. I guess I need a spanner or pipe grips?