Brake bleeding issue
Just to clarify , it is not a proportion valve . It is a distribution valve . I believe you have a valve for a drum/drum brake car . What is needed is a valve for a disc/drum car . These are not hard to find nor are they expensive . Always bleed brakes starting from the wheel farthest from the m.c. . Mighty-vac 's work great if you are alone . Gravity bleed works , also