So I went ahead and replaced the old pots in my bass, a pair of 25K vols, a tone, and a blend pot with the BQC system from EMG. I have a set of 90's EMG P-J pups in the bass. I have everything wired up, added a 2nd 9v in series, and plugged it in. Everything works as far as bass, treble, mid, blend and vol, but with an overdriven signal. I noticed that the BQC system vol was a 50k, but my understanding is that is fine for actives. The old set up worked, but the blend was funky, and I wanted to expand my tone controls. The tone control was previously just a 25k pot with a capacitor to roll of highs. Any ideas why I might be overdriving now? I'm fairly competent at soldering, so I don't think I fried anything, and I even tried soldering back in one of the 25k pots for volume instead of the 50k that the BQC uses. The BQC system comes all wired together to basically just solder the pup's to, the battery, and input jack.