OK I am stumped.
I have ITB Geo Prizm (Toyota) and ITB Corolla FX
I want to put an adjustable proportioning valve in to reduce rear brake lock up however the brake line circuit is not like I expected.
There is already a fixed proportioning valve in the circuit, then there is a seperate line to each of the rea callipers from that valve.
Also the front callipers come from the same fixed valve.
I know I do not want to put a valve on each rear calliper line as it would be very difficult to balance them both.

Any suggestions, ideas or do I just have to suck it up??

Cheers SteveP