Had time to strip the cx down today and rather strangely the cable has snapped about midway along the length of the cable, Iv had cables go before but it's always been the nipple detatched from either end.
It's a right bugger to get to the carb end of the cable and looking at the manual it says to remove the carbs which isn't an option I relished, so after sitting and having a coffee and staring at the bike for 10 mins I decided that removing the top engine mount looked easier, sure enough with the mount removed it took 2 mins to fit. Moral of the day: manuals aren't always worth the paper there printed on.