I had a Nailbomb put in my (very) old LP about 2 months ago and at the time I was reasonably happy with it, it was tight and articulate without being particularly amazing or beefy sounding. I checked its output when I got it and it measured 15.9k. Anyway I played it for about 3 weeks on and off and then left for Uni (leaving the guitar behind). Having now come back after 6-7 weeks away the pickup sounds totally different! It seems to have grown in output, whereas I was previously setting the gain on my amp at 11-o clock I now set it around 9 (same as my EMG-equipped Schecter) and it has also grown some balls, it isn't as articulate as it was but, wow, its so thick and beefy. Is this a natural aging by-product (the rest of the signal chain is EXACTLY the same), has anyone else noticed this with their BKP's?
I did read somewhere a complaint that BKP's had a tendency to 'go-off' and degrade. Not sure I'd call this degrading but its certainly very strange.