Greg Bilodeau
CVRS Member

Jamie, there are most likely some little set screws holding those knobs in place. Look for a little hole in the sides of the knobs and there will be a little straight blade set screw in there. If no holes then they just pull off.
There should not be anything holding the dial but with that said go slow and be careful making sure nothing hangs up or seems stuck. It should slide out nice and easy once the chassis bolts are removed.