I got my hands on a new Yamaha BB1025X yesterday, and at first wasn't bowled over when I plugged it in. The bridge pickup sounded absolutely monstrous compared to my BB415, but the P pickup sounded flat and lifeless, without the low end thump the P is known for. Both pickups together sounded very scooped and not what I was used to from my 415.
Luckily I decided to experiment with the pickup heights - I raised the P by only a very small amount and it was transformed, with bags of thump and growl!
I found I got the best blended sound with the bridge pickup lowered slightly so unfortunately I have to compromise between having either a beastly solo bridge pickup or a tamer sound that blends better with the P. Shame there is no equivalent of the Hipshot D-Tuner for pickup heights!
This is just a reminder for those of you who rarely fiddle with such things to give it a try, especially if you play a bass and aren't satisfied with the sound! Honestly, if I'd tried it as it was in a shop I would not have bought it, so I was amazed how sensitive these particular pups are to small changes in height.