Proportioning valve??

Ok guys I think Ive got it figured out when I bought my t-bird the kid I bought it from contaminated the brake system with power steering fluid and my proportioin valve is stuck sending all the fluid to front and not rear (see rear brake pressure post about a week ago)I took it to a "specialist" haha.. who told me this, he told me too run the fluid through the front brakes as fast as possibble to switch the valve back to rear does he sound crazy or is this possible??? Let me know and if the o-ring inside the proportioning valve is bad any recommendations on how to fix it and where to get the part??? anyone......
-desperate to drive his turbo coupe...!!!
p.s. i have replaced every hose on this car except driverside caliper hose and yet still no fluid to rear!!!

Well, do you have the key on when you are bleeding the rear brakes. It is necessary for the boost system to be active for the back brakes to work.

Yes i do as in the tech arcticles

AH HA!!!! I figured it out hte proporioning valve was screwed see you all soon