here is the best german pinch bolt tool just for the alu a8 arms 210 euros ,
from agent here
http://www.heni-werkzeuge.de/Shop-AU...UNGS-a540.html
full product description i put here,
http://wiki.quattroworld.com/images/..._bolt_tool.pdf
maybe club buy is appropriate.
one of my bolts is not coming out without it although it did 3 years ago.
this tool requires cutting the head off the bolt