Brian A couple of things that you may like to check: Are the calliper bleed screws at the uppermost position? I feel stupid asking this from a veteran like yourself but I've seen strange things in the pits like callipers installed upside down on a formula car.
What is the condition of the hoses? They can swell on pressurising and they also sometimes fail internally so a flap of rubber forms like a one-way valve giving a firm pedal sometimes and soft the next. I don't expect you to be using hoses that are more than 2 seasons old on a race car though. Regards Les -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]

