Time has come to upgrade the electronics on my PJ. It seems that unless both volume pots are on the exact same level, one pickup gets much more volume over the other. Perhaps the pots are mismatched, or it's an expected behavior on passive basses. Either way, I just don't want to deal with two volume knobs. Please note that I don't want to have master volume + tone + a dummy pot I considered replacing the second volume pot with blend knob, though it's difficult to get such pot. Also I'm worried it wouldn't work well on a passive bass. Then I found out about Dingwall Super PJ, and I think that's what I'm gonna get. The Super PJ has a four-way rotary switch, toggling P/PJ-series/PJ-parallel/J modes. (I would be thankful for a wiring diagram for that ) Both pickups are SD quarterpounders, so I expect them to play nice together in any setting. What other options would you recommend?