I haved owned buses and vanagons for about 15 years now and have never been able to get my breaks to work properly.  I've always had to "double pump" them before they work.  I have tried bleeding the system .....many times...I have done it to spec of Bentely.  I just recently replaced the master cylinder and....still  I must doulble pump before they work.  There are no leaks. They are not mushy instead very loose on first pump then solid on the second.  I can't figure it out.  I am in need on this one.  Any Ideas?
Robert Copich
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