Haven't posted this since I completed the project back in August, but here it is!
I converted a BB424X into a lookalike BB2000 over the course of a few months. Have a watch: https://youtu.be/7FuJalEa8UM
Currently working on converting a BBN4i to fretless, project video should be up within the next month. If anyone has details regarding the possible cease-and-desist from EBMM to Yamaha regarding the tuner configuration (or about the model in general), let me know!