<< I would start by trying to remix the tracks by bringing the vocal up first. Try and use the bleed that you are getting to help the instrument tracks instead of letting it hurt them >>
this is EXCELLENT advice and bears repeating.
i used to record my band's practices in multitrack format, and the vocals were always loaded with drum bleed, as the vocal mics and drums were in the same room. me being the singing drummer didn't help matters any. the guitar amps i relocated to other rooms so they were isolated somewhat, but i couldn't do anything about the drums in the vocal mics.
i always started a mix with kick and bass, and then drums, and built from there. vocals were almost the last thing i'd add, as they "sit on top", right? well, after fighting for months with our recordings to "keep the bleed from hurting" the rest of the mix (and to no avail), i decided one day (call it a wild hair) to start with bass and kick as usual, but to bring the vocals in immediately after that and build the drum mix around the bleed on the vocals.
as soon as i did that, it was like night and day with regards to how much better everything sounded.
moral of the story--bleed (and often nasty-sounding bleed) is inevitable, and learning to use it to our advantage is a wonderful skill to master (or at least get better at), rather than trying to remove it entirely.
cheers,
wade
PS--X, you're getting a rep point from me for this--this is excellent advice.