i usually go by how much thread is left on the adjuster, is this the same on the turbos although there not cable,there fluid type,cant think of proper name, too early LOL

cheers.......

 

I think it's down to how much fluid is left in the reservoir. Assuming you've no leaks in the system, if the fluid is noticeably lower from one month to the next then I suppose you've got a wearing clutch, because the slave cylinder will have to push out that much further to accomodate the wear.

 

How high it bites is a pretty good indicator, although you can meddle with this.