Dogman, thanks for your comments!
ido1957, this time I finally figured out what was wrong with my recordings. I was experimenting, trying different settings because I was having a problem with clipping on the vocals, even though the overall level of my mix was kindof low. I needed to adjust the trim settings (not volume) of my vocal track in Sonar by bringing them down a bit, then I was able to increase the overall mix level without causing more problems. I did not need to EQ the voice at all. I only applied a very small amount of reverb. Also, I agree that a bit of mid boost on the guitar tracks might be in order. Thanks!