Alright. It is finished. It's not perfect, but it's still awesome.
Once I got the correct part in from EMG, it only took a day for the Luthier to get it all installed.
Once home, I discovered that the company on eBay I bought the brass nut from did NOT follow my measurement. The nut was not long enough, it was too wide, and of course the gauges were too small. I took a variety of sandpapers to the nut and custom fit it to my neck.
The tone is amazing. It's the one for me. Powerful, burpy, and distinct. It's attack is so high. Every note, no matter how low, is crisp and individualized. The BQC Preamp has some small things about it I dislike. The volume control is weird. The volume is WAY low until you get it to about 6 or 7, then it gets really loud. Otherwise, I enjoy it. The 40dcX pickups steal the show. Most of the sound is coming from them.
The unique Spector growl has changed. Where it was 70% of the tone before, the other 30% being a clean tone, it is now only 40% of it's tone. You can still hear it in the background but the super driven pickups are forefront. I love this. I feel like no one else has this tone and it's all mine. The overall tone at very low levels sounds a lot like it's being played through a really large system at a stadium.
My luthier was not able to fit 2 batteries in the control port. I told him in a few months Im going to pay him to make me an 18v box/section because I really want to hear just how powerful this thing can be.
The pickup padding needs to be redone on the neck pickup. It's sitting at an angle because of the wiring. Slants towards the neck a little. One of the screws is stripped so, I will wait until we add the 18v box before I mess with it.
The brass nut is amazing. Helps the overpowered tone of the pickups and the growl of the Spector to sound like a natural, massive instrument. It sounds close to a large grand piano hitting a note. Its awesome. Totally want brass frets some day so this sound is match all over the fret board.
While working the brass nut, I ended up pulling up some paint near the truss-rod cover. No biggie though.
Would I do this again to another Spector? Probably not. I now want a high end Spector for sure, but my next one needs to be the pure Spector sound.
One con to the pickups... they are so hot, they pick up a lot of string noise. I'm having to use my fingers to mute all the strings. I usually don't have to do that on every string transition.
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