I play a Rodgers 702 at church. I've found that, when I'm beginning to advance the crescendo pedal when I already have a fairly soft setting already, the sounds "backtrack" then start over as I advance the pedal. It doesn't happen with every combination. Apparently, there are a few stops that, if already drawn, will fall out when you start advancing the cresc. pedal. It's really disconcerting when you're already playing fairly softly and the setting suddenly drops down before increasing. I'll have to recheck it, because I'm not sure which stop(s) drop out. Keith