I ended up working late today, but my cunifer showed up so I had to go out and try it out.
My wife made fun of me for opening my box from Summit, sniffing it, and declaring that there was nothing like new car parts smell. I still say that is a real smell. It has hints of oil, rubber, and metal.
Anyway, I had built the proportioning valve mount with the adjuster screwed all the way in. Once I loosened it up, it blocked one of the output ports on the master cylinder. Fortunately I was able to just rotate it around one of the bolt holes and use the same bracket.
Cunifer is weird to work with, but it flares really nicely.