Bleeding Brakes!

I'm in process of getting my Mojo ready for it's SVA re-test. As I've had to dismantle some of the brake pipes, I have had to bleed the brakes.
There is a small issue when it comes to bleeding brakes on a Mojo or Riot. The rear calipers are from a Sierra and are mounted to an upside down Fiesta front upright. The consequence of this is the bleed nipple is lower than the inlet hose. This allows a cavity of air to exist between the hose inlet and the bleed nipple. No amount of bleeding will get rid of this air. The only satifactory way to bleed the rear brakes is to remove the rear calipers. Having done this a few time, I've got quite good at it!

Firstly find a peice of wood approx 2" x 2" and cut is diagonally to form 2 wedges.
Now remove one caliper at a time and fit the wedges between the piston and caliper. This will stop the piston coming out during the bleeding operation.

Then rotate the caliper so the bleed nipple is directly above the hose inlet. Now you can bleed as normal. Refit the caliper and repeat on the other side.