I have a Marcus Miller Jazz that I picked up a couple weeks ago and have come to the conclusion that I don't need to upgrade the preamp. I actually use it in passive mode 95% of the time. If I do need a bit of bass ot treble boost, then I flip the switch and I've got all I need. So this leaves a bit to be desire in the control I have while in passive mode. When in passive, all I have are volume-volume controls. With 2 holes, can I wire up a volume/passive tone control and a blend pot? I assume that all I'd need is a 250K stacked pot for the vol/tone, and a blend pot. Is this right? How do i integrate this with the preamp? I'm thinking this is fairly simple, but I'm a little lost when it comes to making it all work with my preamp. Thanks in advance for any tips.