Do it! When I last looked on YouTube etc. there wasn't a decent BWR servicing video; the only stuff I could find was strip-down videos of an ancient AW, and a really poor-quality French video with some bloke in his pants doing a partial disassembly of a BWR.
I have found a similar partial disassembly video now, made by someone with weird toes. I might try taking the freehub off to see if it’s something simple like the pawls sticking. All two of them!
Hmmmm, no. Maybe i could make one...