Yea, not too sure on the specifics 2stroker however i know that it doesnt work with drums all round.
This is the thread where i figured that out
http://www.auszookers.com/index.php?nam ... ake+issues
Anyway i ended up sourcing a used master cyl and put a seal kit into it which got rid of some probs. I then had to replace the 2 rear wheel cylinders coz they were leaking. It was a mega pain in the ass but touch wood they're finally sorted