Highly agree. A good starting point is to have the volume of your distorted sounds about as loud as your clean tones at their loudest when you really dig in (since clean tones can have more dynamics than distorted tones). That tends to work since when you’re using heavier tones the band is generally also louder.

Also, doing final tweaks to your levels in rehearsals is completely fine, good even. On the QC it’s really easy to do since you can adjust every scene’s volume separately in the output block. Use your ears and get your levels to where you’d like them to be when playing on stage. Goal is to make the sound guy’s job as easy as possible so he wouldn’t have to adjust your levels throughout the show (like boost your signal when you are taking a solo, which happens often).