I've thought about fixing it, but I've decided not to. It s really not worth it. These guys are from a small town and play a couple of local shows every now and then. Not many people are going to hear this, outside of their hometown probably. I have plenty of other recordings I can use for my portfolio.
The main problem I have, is dealing with their ego's. On a previous song, I told him he was out of tune during a solo, very much like this one. I recommended some notes he could play that were in key, and his response was, "This is how it is supposed to be. Everyone complements my solo's after shows, so don't tell me I need to change my solo's." After that, I just thought, "fine buddy, you play what you want and see how far it gets you." Nobody in the band would back me up in trying to get better solo's either, so they will just have to live with it too.
Besides, too many shitty musicians get edited into something they are not WAY too often these days. I got paid, and the band is happy, so that is that.
edit: By the way, I appreciate the tips for trying to make it sound better! However, based on their attitude, they are going to get exactly what they put into it.