I have uncovered some gremlins after a paid install by a shop on a complete system. Here is a photo of the amps and there mounting. I was hoping to run this by some of you that would know what to look for and hopefully fix anything that is not up to par. I noticed the installer used a small head black painted screw for the ground. Should that be replaced with something more akin to the ground bolt in the cable lug next to it? TIA
