Still wondering if Bob had any of the switches engaged. Sounds like you have some experience with these mics. Do you use the high or low pass filters?
I don't like to use filters on the way in (prefer to do that after the fact via software)
I do like the presence-boost switch engaged.
With the presence-boost, the SM7b is still more tame in the upper-mids than a RE320.
I prefer the RE320 for VO work... and the SM7b for guitar/bass cab.
The RE320 isn't bad on guitar/bass cab... the SM7b is just tighter on the bottom end.