Ok , to add a little more to this to try and help people out in the future..

The longer the outside of the cable gets, the shorter the effective inside length i.e as the autoadjuster expands it will take up more and more slack in the release fork.

My problem seems to be its taken up too much slack.

First point of call now is get under the car and see if it has ratcheted right out. If it has i need to either find a way of returning some of it , or i have an idea to trim the rubber end bung down a touch to give me a few more mm, the clutch doesnt ride so i just want it so the release bearing doesnt get putter under constant stress.

Will update later with more findings.

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You want tact ? Call a tactician !
Xbox 360 : Cableguy1984