This isn't really a troubleshooting post but more of a does anybody else experience this. My Pineapple distortion squeals with my Musicman Axis with volume all the way up. It doesn't do this with my Les Paul. It's hit or miss with different guitars. Is it because of the pickup output? Anybody else notice this? I can turn the volume back just a hair on my Musicman and it will stop squealing. And it only does it when the boost switch is in boost mode not in gain mode.