first off ... Welcome.
yammi bb bass? ... Yeah, you'll fit right in here.
washburn? I keep ending up there. My current non trem bass is a taurus.
refinishing? I do 3 or 4 a year. I have gotten much better since I learned about reranch. Last one wasn't a re, it was a scratch build carvin v 440 (w/ kahler trem).
playing second fiddle (with really thick strings) to guitarists? Yeah, we know ... And don't. We stick out like a sore thumb (too much slap) and when we can't get it ... We build it, and help each other to do it as well.
stienberger transtrem. You let one go. Doh! Personally, not that I want one, but I do want to check out and fiddle with the engineering. Ok, ide take one, but the asking price lately is rediculous.
nuts. Like the locking kind. Don't understand what your swapping onto what or why. Bass locking nuts I've seen are the tops of headless and, as I understand, a bridge, at the nut. Locking nuts on floyd rose type bridges are to eliminate tuning issues. We do have many tricks for tuning issues btw. But anyhow ... Please give us more details about what your doing.