With this amp, there are so many variables you can lose the forest through the trees.
When I find a given channel or mode isnt cutting through the mix well enough or TOO much, I try to use adjust mids or presence first. Sometimes thats all it takes. If that fails, I try to switch tube / diode or pentode/ triode settings.
When that doesnt help I try a shift in overall wattage Im using and then fine tune the eq again to suit my needs.
Now when you are trying to balance the 3 channels for live use so theres no "surprises" when you switch channels...it really takes a bit of thought to find the right settings / modes / eq / rectifier type. Some modes just dont play well together unless you really do some knob twisting. For instance, Tweed just wants to overpower the crunch channel unless you really attenuate the wattage bewteen the two and then use mids/ presence to make one cut more than the other.
Sometimes crunch sounds so smooth and when you go to channel 3 it can be TOO biting / bold ......a quick flip to triode might be all you need.
The beauty of this amp is that it allows you to fine tune the power / eq / feel for almost any situation......sometimes it can get overwhelming unless you take it slow and think it through before you start knob twisting .