min ewas master when it was doing this! slave cyl aint a box out job mate!

Okay, thought this was in the gear box so a box out job, but after reading your engine build I'm not going to argue with you!!:redface:

Nice build by the way,[B)]:drool: you probably saved yourself £4,000 there
Wish I could do this myself, canna see that happening
 
On 4WD gearboxes the slave cylinder is indeed inside the bell housing. On 2WD gearboxes, the slave is on the outside. So in your case it is a cheap and simple fix.