PD 100 might have the latest revision anyway

Turbo Technics sells the actuator separately - well they did last year when I had one from them

You don't fit new vanes as such, just remove and clean all the crap out of it. There's some pics on ukmkivs by old_no7 showing how he stripped and cleaned it. PM him on here if you're not a member

Think R-Tech charge around £250 to do that
Can't help about the ABS problem