Working my way through the course to get certified…Hello all from Fl! Anyway, working on my residential electric course section, I went out to my panel and touched it with my arc pen as suggested. I then just wanted to check other things on started touching each breaker with the pen. As I worked my way through them they all tested neg (-) until I touched the top two on the right side of the panel which lit up (+). Thinking may be an issue with my pen just kept testing things but each time those two breakers lit up. So, I decided to take the panel cover off and make sure I didn’t find anything unusual. All the wiring looked fine, no double taps or anything and I checked each connection with the pen which was fine. Again, put the pen on top two. Thinking the breaker wasn’t connected well pulled it and pushed it back on. I then rechecked and still lit up but now all the breakers on the right side lit up when touched with the pen. What would cause this, I’m just curious? Could the right side bus be loose and maybe not bonded to the panel all that well ?