On the P1 standard front shocks, there is a cam-bolt (for the camber adjustment I presume) with 5 diff marks on the strut I think!. Mine is currently set at 12 o'clock position at the mo, just wondered where are other peoples set to? What would be best for fast road use/tyre wear

Your right this is the adjustment point for Camber. The marks mean little of nothing. You need it set correctly by someone such as ourselves who has a level ramp and a good Wheel Alignment System. Apart from tyre wear, Camber has a considerable effect on how the vehicle handles.