cheers guys for replys
its a dt swiss freehub.. defiantly doesnt take a spacer, ive tried all sizes and the casette sits to high up freehub otherwise and locking nut wont grip.
just took it back lbs (round the corner thankfully) and it is the freehub still, he explain to me what it was/is. (he never got chance yesterday, shop was heaving).
you can tell its been serviced, silky smooth, but to get rid of the of the slight play it would need a new free hub (only can noticed when cassette is on), which will cost alot as we now, but he reckons it will be fine and wont damaged anything or jump gears or owt with the amount it has. he recommends just keep using it until it gets alot worse then replace it. he reckons ill get at least 8/12 months out of it, so fair enough. no need to spend more than i need to. if i can get through winter ill be happy with that.
cheers guys, if its not one thing its always something else with this biking lark 🙂