For the past few days we've noticed the lights flickering and pulsing, as I went and stood near the panel I could hear arcing. I removed the cover and pushed in on all the breakers thinking one of them was loose, but no such luck! I could hear the arcing coming from behind the main 200 amp throw and as I pushed around on it I could hear the pitch of the arcing changing. The panel is a General Switch Company 200 amp. It looks like the main can be switched out but is that any good as the buss bars probably have arcing damage now. I haven't removed the main yet to see how bad it is, I thought I had better get a new panel on hand prior to doing so, so I can be prepared to swap out the entire panel. Am I on the right track?? Can the main be changed? Should I just replace the box? Or do I have bigger problems on my hands??