For those who know anything about either the Parapedal or its reissue, the Parachute, I have a question. It claims to have the longest travel of all of the wahs out there, but just how long is it? I assume that it works by a really long rack (as in a rack-and-pinion) turning the pot (which has teeth, to accommodate the rack), since the Parachute has two pots. If not, how does it work?