If your solos are struggling to cut through, it’s quite possibly because your sound is competing with something else that shares the same frequency range. Any adjustments to your amp EQ should ideally be done in the overall band mix, especially with two guitars.
A guitar’s clarity benefits from emphasising the mid-range, hence the evergreen popularity of the mid-boosting Ibanez Tube Screamer overdrive pedal, and the way that extreme ‘scooped’-EQ metal tones which over-emphasise low and high end sound great on their own but often vanish live.
EQ pedals such as the BOSS GE-7 can be deployed to increase perceived volume while eliminating feedback, by cutting and boosting particular frequencies. If your amp has an FX loop, try it in there to control both channels. Alternatively, BBE’s Sonic Stomp approaches the problem by correcting the phase relationships between low, middle and high frequencies.