Does or does not the brake distributor block/switch have a valve inside it which dictates the level of pressure divided between the front brakes and rear brakes? Maybe Im saying the wrong term, but thinking of the correct item? That propotional/delay valve you show wasn't what I was thinking about...I was thinking about the distributor block and perhaps its malfunctioning...
I've got some old original Delco-remy brake institute books that show the blocks, and I swear I saw a valve within them.. hmm.. got me thinking now... (scarey).. If I can find them (packed away for moving), Ill take a look at them again.
