Chris, does this require a Kolstein tailpiece for the time being? If not, your local luthier's shop may have a replacement tailpiece that would work, or could be made to work, as you order a new tailpiece for your model, to be shipped to you from Kolstein. Then you'd have a backup in case the new Kolstein tailpiece repeats the explosion of the original one.
I'd also be curious as to why the original tailpiece exploded in the first place. True, the mounting method and wood grain may have contributed to this problem, but is it possible that the strings might be too high tension for this tailpiece, and if so, for the DB itself? If this DB does turn out to be one you do want to keep, that answer might be important. I know in the smaller fretted instruments, many high-quality manufacturers specify only as high as "medium tension" strings.
I don't know that it requires a Kolstein Tailpiece, but obviously it's a smaller/shorter model made for the bass, so it would be ideal. It would also be nice to have the original working if I end up selling it.
And it's entirely possible that the strings contributed. It was wearing Spiro Mittel 3885 strings when it blew. It shipped with Kolstein heritage, which some people like but which feel like rubber bands to me. The busetto I played at ISB was wearing Weichs, which is probably why I liked it. I think I had switched the Heritage out for S42 Spiros when I recorded the review video, but later switched to 3885 in an effort to get the amplified sound to pop more. If the Krivo experiment works out, I'd be perfectly happy with the S42s. They felt a little floppy when recording that video and I remember thinking it felt a bit like a Stratocaster, but on the road I think I could be pretty happy with that considering the alternatives I've been faced with in the past.
