Thanks for the heads up. I will look into that. I don't know what you mean by "power near main" though.
Here is a graph that might give an idea of what is happening better than I can explain it. The time is over the course of 2 days. The usual temperature is 78, hence the long straight lines on the graph.
http://belk.jomber.com/view.php?user=nathan
Thanks for the help with this.