Ditto what jason said.Air bubbles will indeed carry shite up the hoseing to the master cylinder.If it is the gearbox seal it can be done in a day,with 2 of you.But paul,by your own admission you aint too good twirling the spanners.So i would get help from someone who knows whats what.Hope it is just the slave cylinder,
all the best
gus
Thankd very much Gus. You are completely correct of course, Im quite proud of meself once ive taken all the bodywork off and changed teh motronix unit!!