It sounds like you have some nice fixes/adjustments in there. I don't remember enough about the exact working of Live to help verify some of the changes you made though.
Maybe the discussion in this post can help some.
http://www.eqemulator.net/forums/showthread.php?t=26099
I think most of your code sounds about right, but someone will need to confirm everything is pretty finalized before this could go into the source.