So my old proel volume pedal that I have used with my Megavibe is crapping out on all fronts--the pot needs replacement and the enclosure is worn. So-- what is a good speed pedal for the Megavibe? Here is the only real spec: it needs a 100k "dual" audio taper pot. I like the looks of the Roland EV-5, particularly since it has a angled plug-- but I don't know its specs or if it could be retrofitted wth a 100k dual pot. Any suggestions?