I just bought the bass chorus from Guitar Center. No matter what position the knobs are in it doesn't seem to do anything at all. Here's my signal chain. Warwick Corvette Fretless -> CEB-3 input -> Output(B) -> Markbass LMTube800 The pedal has two outputs and maybe I'm using the wrong one or my settings are messed up. Fresh battery, the check light comes on when it's plugged in. Could a more experienced user please help?