I know this is super old, but thanks for the picture and the idea. I was just about to order an in-line proportioning valve for my 4 piston brake conversion, but this is a heck of a lot slicker looking.
Just ordered myself one and will mount it in place of the stock splitter. [/quote]
To be honest I've never had to adjust it, It has always been wide open, you might get by with out it?