adjusting brake sensitivity?

russ, here's what i have:

http://cgi.ebay.com/ebaymotors/7-DUAL-CHROME-BRAKE-BOOSTER-MASTER-CYLINDER-SPECIAL_W0QQcmdZViewItemQQcategoryZ33566QQihZ019QQitemZ8072142598QQrdZ1QQsspagenameZWD1V

with this prop. valve:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7954132567

I'm not even close to getting it installed yet, (plus i have no idea how to plumb the prop valve) but if you need a prop valve, this one is set up for disc/drum. Oh yeah, and post some damn pics already!!!!!!!