i am getting a very LARGE amount of distortion from my Boss DD-3. I can't set the pedals vol know above 9 o'clock. If I try and increase the repeats and delay times... it really becomes useless. Currently it is the only thing in the loop. I tried plugging straight into the pedal into another amp and it worked fine. I could crank the pedal and use any settings that I want. What's up with my loop? This was at a very low volume too. This has happened before. The preamp tubes were installed in August.