I have a 2001 ZX12R. I went to replace the rear pads and to make a long story short, one of the pistons was messed up and had to be replaced. I put everything back together and now I have no rear brake. I have tried to bleed them with out much luck because no pressure builds up. The pedal just goes to the floor. Any help with this would be appreciated. It has to be something simple as there is no pressure and the pistons do not close at all.