Decompensation Frented

Buaena afternoon to all, and changed to my c15 the braking distributor for which there is liquid losses and the ITV, the vbstating blood and the liquid jet was not passed, the problem is that I take it back to the ITV, and again unfavorable because the rear brakes are decompensated, I think that it is well bleed And cleaned with gasoline, and the shoes and a saw sheet passed to remove the layer that always state contact with the drum, my question is? attention? How can I verify that the rear brakes are already well, e have been mechanical in my youth, and I understand something, but when the rear front is further because I do not know how, what is done is true true