On Wed, 20 Nov 2013 19:58:37 -0600, Nightcrawler® wrote:

There is adequate space in your meter-main to add another neutral bus.

Is the general consensus that lug corrosion is what actually caused the
huge wires to overheat?

What would be other reasons? Or, is that the only reason a neutral would
overheat, when no other wire appears to be overheated?