Interesting.
I had a similar reaction with my ABZ, but the circumstances were very different.
I built this beauty with the help of my luthier friend Tony Karol. It was a labour of love, with some amazing pieces of figured maple and bubinga in it, and some very fortunate accidents with design choices. Partly inspired by Anthony Jackson's original Fodera single-cut, it began with a single EMG soapbar at 18V, and a volume control. Carbon fibre insets and careful lamination made the neck incredibly stable, and the 35" B string was to die for. It made the sounds I had been hearing in my head for decades, felt like an extension of my body, and pretty much killed GAS for me for about 21 years.
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I added a second pickup rout, went through a number of different EMG pickup and control layouts as I fine-tuned it over the years, and all it did was get better.
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Sadly, it was pretty hefty, even after a couple of re-carves to save weight. In the end, a chronic back injury eventually forced me to either give it up or quit gigging altogether.
Purchasing the Dingwall in 2013 was a last-ditch effort to save my career, but it was more money than I'd ever spent on a bass, and I was ordering it blind. My only reference point was a disappointing test of a Super P, and short session with a first-gen Combustion.
My anxiety level was through the roof for the next few months, but when it arrived, the ABZ was a revelation. It gave me the same "aha moment" that I had on completion of the single-cut, but even more so. This was THE ONE.
I think I understand the stress you're feeling over your Spector, but my reaction was the opposite. Instead of feeling sick to my stomach that I had to retire the single cut, our parting was gentle, and without any regret.
As the Dingwall captured my attention more and more over the next few months, I came to realize that the single-cut had become irrelevant. It bugged me to have such a beautiful instrument tucked away in the closet, so I did the obvious: I polished it up one last time, and then give it to a talented friend who I knew would appreciate it.
It still comes back to me for maintenance once a year, but while I enjoy the visit (and love to see the videos my friend makes with it), I have no problem letting it go.