Handbrake not strong enough! (MOT fail, 1 and 2 in thread!)

[Prof]

I\'ve a link here on the brake refurb I did on the rears:
 
http://www.mazdarotaryclub.com/forums/showthread.php?t=55956&highlight=brake
 
In the 6th Piccy you can see the caliper mechanism with the handbrake cable detached.  On the handbrake cable are 2 nuts that tighten it onto the bracket - they can be moved up and down the cable to provide some adjustment.

[papercutout]

These 2? I tried turning them, didn\'t realise they actually did anything - the rubber just twisted lots!

[Prof]

Thre should be 2 nuts either side of the bracket at the back - they\'d both be in that rear red circle you\'ve drawn - they move the cable back and forward relative to the lever. There won\'t be a lot of adjustment - but every bit helps.

[Prof]

Here\'s a pick from the service manual - I\'ve ringed the nuts in red/blue:

[papercutout]

Found those, managed to get a little more leverage...

And sheered the big bolt that has the spring etc on. I\'m foobarred. Oooooops. Grrr.

[grinder]

hummm sheering the bolt .. yeah thats not going to help is it