4003 wiring?

[marcinkus]

I put this topic also under the "ask a luthier" forum, but I'd like to know some response from you RICbass players:

I own a '98 4003. I replaced the stock PUs with the vintage ones, plus I added the .0047 cap, and the bass is perfect but... there's a odd question I need your response about:

1) when the switch selector of my bass is upward OR downward, the pickup volumes work, everything works;

2) when the switch is in the middle and BOTH volumes are full open, the bridge PU has almost no output (very thin!) and it seems only the neck PU works; in fact, if I move the switch upward, the tone seems the same!

3) but if I turn down (a little) the neck PU volume, the bridge PU starts singing;

4) also, if don't turn the neck PU volume until the max the outputs are mixed well and everything works.

Could it be the neck PU pot or is this a common Ric bass peculiarity?
Can anybody check its 4003, 4001 or 4001v63 and answer my question?
Could the .0047 cap cause this oddity?

Any answer will be very helpful.

Thanks

[rick12dr]

How far from the strings is the bridge PU polepieces set?I don't know how anyone else sets theirs up[this is the reissue horseshoe PU we're
talking], but on mine[a V 63] if I push down the strings at the last fret, the strings should be around 1/8" away from the poles on the PU coil, maybe a tad farther away.Try this.

[marcinkus]

On my bass, pushing down the strings at lats fret, they are 2-3 mm away. They are really close to the pickup because I like this tone. Anyway, when I switch only the bridge PU I have a big output! Bu when I use both PUs at full volume, the toaster overcomes the horseshoe.