Works very well for me - great job. The overlaps are tricky, but that's the song, not the mapping.
The only thing I'd done differently is to start with a golden note on the first "Yo"
If the timing fits good, I could try to make the pitches for it, I have a MIDI file for Eminem"s best song in my opinion. I already started to create it a few months ago but the correct timing was a big problem, so after the first chorus I gave up.
Mamba99 Timings look pretty good to me at a first glance.