Sounds cool and all, good performances, but it sounds very mono. Everything is pretty much right down the middle. Is there a reason for this?
Yes the bass is flubby. I'd put a high pass filter on it around 50dB to clean up the sub lows and maybe cut a little bit around 250. And if you haven't already, add a high pass filter on the guitar around 150 or so to get it out of the way of the bass. With only these three instruments, you should be able to get some pretty good definition between them.