Ok so I've done a booster check following the guide on this handbook
http://www.autoshop101.com/forms/brake05.pdf
With the motor off, I depress the pedal and it will eventually get higher after about 3 or 4 pushes, i.e. locked right at the top, so you can't push it anywhere. I.e. the pedal reserve distance
I turn the car on and the pedal sinks, i.e. to normal operating levels, still with the same 40-50% 'free' threshold which has no affect i.e. 'long' pedal.
So according to these checks, the booster is fine?????????????
ARGHGHHHHHHHH!!!!!!!!
Well I'm getting the bracket sometime next week I think, so I'll get it put on and we'll see how we go.