Having a mess around with my Escort RS Turbo fixing the many faults. Basically brakes were very very poor, little bite and a lot of pedal travel and a lot of force needed to stop the thing.

So far I've fitted brand new

Cosworth 4wd calipers, ferrodo DS2500 pads, 2wd tarox G88 discs with stainless brake pipe's

The pedal travel is still at least half way and a lot of force needed to stop it still.

If I pump the pedal when engine off to get pedal rock hard then hold pressure on it and start car, the pedal slowly drops.

That would tell me servo is ok and I should be looking to buy a new master cylinder?

I've not checked the drums on the back but handbrake works as it should