Okay, if anybody on here plays electric guitar, my brother has a question for you. Brother and I are having BAD feedback and screeching problems with his electric guitar setup. This screeching and squawking problem has broken up several of our jam sessions, including the one we tried having today, and we've both finally had enough of it. The thing is, it only happens when brother has his distortion pedal hooked up and activated. Brother has two amps, a Randall RG75 and an Epiphone EP-SC210. Distortion pedal's an Ibanez SM7 Smash Box. Brother also now has an Ibanez CM7 chorus pedal, but the hiss and squawk ONLY happens when using the distortion pedal and the distortion pedal is activated. We've started daisy chaining the two amps together and tried having the guitar plugged into first the Randall with the Epi daisy chained to it, then tried reversing it with the guitar plugged into the Epi and the Randall daisy chained to it. Both ways the squawking feedback wouldn't go away, no matter how much we tried fiddling with the controls on both amps. Brother also tried moving as far away from the amps as he could for the small room we're using, with still no luck. I know this may be the wrong place to ask, but it's the first place that came to my mind.