[Angel]

I have taken the panel off and can see almost the same as your photo, when the pedal is depressed, there is no movement in the mechanism whatsoever, is this normal?
When depressing the actual footpedal, there are clicks to be heard but the pedal will go straight down to its lowest point, conversely, when the hand release is pulled out..there is a big 'springing' sound was the pedal is released.

Is it possible that either the cable is very loose or there is a problem betweeb the pedal and cable connection? (all this is purely me mentally picturing how the assembly would be)

Thanks for everyones help!