The volume control is strictly on or off, with only the first quarter-turn having any effect and making no discernible difference thereafter. The Roll Control works in the same sudden-death way, switching from single- to dual-coil mode immediately after the initial twist. In contrast, the tone pot is much more gradual in operation, allowing some subtle changes in texture.
You'll find the answer to your first question in the middle of this schematic diagram by JohnH. There's a wiring layout diagram just below that, if you need such.
As to why your unit might not be doing what you think it should be doing, well, that's a guitar of a different Nut! ;D The article's author didn't sound too impressed with the action of either the Volume control or the so-called "Roll Control", so one might suspect the values of the two pots - they might be 'non-standard' to a fare-thee-well.....
If you don't hear any effect when rotating either of those controls, then you likely have other problems, but let's take one thing at a time.
Rule #1: All Lives Are Final. Make sure that the life you have just been issued is appropriate for your needs, before departing the womb.
Rule #2: In case you don't like the life you have, see Rule #1.
i can see 2 pairs of red and white wires going to the roll control and a white (ground? needed for operation of the roll control.) going to the volume through the f hole. the wiring is very tight. all three pickups are 4 wire and stacked p90s. i took a look also to check on the magnets, as they are supposed to be ceramic, but there is one silver (alnico) and one black (ceramic) within the same pickup. i wonder if one is just some kind of spacer or something as these are only meant to be ceramic? has anyone seen a mix like this before?