Hmm, in my experience the coffin MC type plunger adjuster has quite a range, at least after digging out the epoxy from the set screw. I later moved to CRG levers.
In fact, you usually have to be very careful to leave sufficient free play (= lever movement before hydraulics engage). 2" travel would bug me.
Take a look at this link and focus on the last part about visible liquid movement in the MC reservoir. I don't do the 1 full turn CCW, but I do take care to have a safe and appropriate amount of free play.
http://www.ducatisuite.com/leverchange.htmlBK