It work's perfect, tricky to tune and adjust at the beginning but once you get used to it, you do it flawlessly.
I installed into a Jaguar Bass MIJ
I installed a full set of HB2’s on my Japanese Fender Geddy Lee Jazz Bass and I liked them so much that I decided to install the BT2 to go with it. Installation was a breeze. It took only a few minutes and now my Jazz Bass goes from standard tune to drop D in one quick flip. I can actually change tuning during a song, and change back and the bass stays in tune the whole time. Now THAT is cool!!!