So, TI Flats on and I rather like it now, I think the action needs to come up a little with the low tension strings, or I might put a tiny bit of relief into the neck (or a bit of both). But it sounds and resonates a whole lot better than it did with rounds for sure, especially in the higher register where the rounds seemed a little lifeless. It still needs a little sorting if it's to be sold as a bass - pickguard screws, nut screw fixed, PUP height etc, and I think I might put on a 3-string retainer which I like on FLs - but it's starting to feel like a bass as opposed to a load of thrown-together parts 👍