Just got one of these today....... s'niiiiice, I just need to learn how to use the looper a bit more accuratly..... Anyway, I'm wondering about the expression pedal.... it sounds really cool, but I don't want to have to pay the £60 or whatever for the actual Line6 one, especially as I have an old Bespeco volume pedal kicking about. How do they actually have the wires in the official version? Looking down the plug on the pedal, it looks like a mono jack, so I guess they'll just be running a signal through the potentiometer centre-pin to one of the side pins - just two wires. Is this anything like waht it is really, and what size of pot is used?