Hi all! I recently completed my first attempt at bass modification. I installed a Belcat preamp, from eBay, on my SX jazz bass. It's a 2 band preamp with volume and blend control. All the controls work the way they're supposed to but the volume is way too loud, even if plugged into the "bright" input of my preamp. The EQ pots are 25k and the volume pot is B500k.