I broke in my Axe FX II at rehearsal (while using a 5150iii power amp as a slave) into an orange 2x12 closed back tab, and it sounded phenomenal. It was easily better than any amp I've played. However, I tend to get feedback on my presets with more gain. I used a gate to help with the issue a little bit, but the gate began sucking away my tone. Is there a set in stone way to achieve no feedback without it killing your tone while still having a bit more gain?