I am having a problem with poor carve quality on some stuff. See the attached pic. That is on "best" with a new bit on hard maple. It should be carving a lot smoother than this. I'm using a 1/2" rock chuck, bit is tight, doesn't seem to be slipping. Everything seems to run smooth and quiet. Need some ideas of what to check. Calibration maybe? I would appreciate some help here. Thanks!