The advice is sound,I went down the route of raising the pups to balance them and it sounded pants.One day I went the other way which was down in small increments starting with the neck and balancing the bridge with it and hit the holy grail.
I should also say it,s a 4003 with hi-gains,straight neck,hipshot bridge,black scratchplate.
Could it bre the black scratchplate ?
The pick ups are very sensitive to height and have plenty of output so lowering is not going to make it a quiet bass,you could always increase the gain a bit on the amp which is no bad thing tonally.Sometimes you get blinded by output figures always striving for high K values-mine runs out at 11k on my meter but some of the best sounding vintage basses run out at 8K ohms so there is plenty headroom on the pick up front.
In conclusion once a Rick is set up properly like a Rick which is unlike any other basses they are out of this world.
Could it be that there is a lot of magnetic pull from the magnets on the pups due to there size shape ?.loadsa theories but the song remains the same-set em up properly.