Cool tune. Nice B3. Guitar tones excellent. Vocal performance a notch above! Lyrics are cool and unusual.
Don't poach the grouper, kids. That's my takeaway.
Mix-wise, I wanted the excellent vocal to be a little louder, all the way through. However, I remember certain spots where it sounds like the singer got closer to the mic, and if you increase the vocal's volume globally then those louder spots will put your limiter to the test.
As it is, with those excellent blues-grunge guitar tones, I think there are spots where they seem to push the limiter hard and maybe there is a little distortion/clipping? Maybe just a little, maybe when the singer hits a growl and the kick drum comes in? Maybe 1:50 - 2:05 area? Or in the intro, does it get a little crispy? I can't tell if it's a little clipping or a lot of nice distortion :) And you've got a guitar hard panned so maybe it just adding up to be too much for that one side. I dunno.
I have another stupid comment. What you have is bone-dry as far as atmosphere is concerned. Blues in the studio. You might take a handheld recorder (zoom h2n or equivalent) down to the local bar. Turn the thing on. Order a black and tan or equivalent. Record five minutes of atmosphere. Turn off recorder. When you are ready, go home and lay the bar atmosphere subtly under your track.
I really liked your song, very tasty.
-Tom