[devilsrighthand]

I had asked if anyone had taken a control head apart to see if it was fixable and got no answers. So, being the skeptic, I opted to do it.
I had vacuum problems in the control head, where the ac defaults to the defroster. There are some o'rings that need to be replaced to solve this. Total cost was about an hour and a half of my time and $2.95 worth of o'rings. It now functions just like it is supposed to, and I saved about $500.00 bucks.

I do not have time right at this moment to write it all up, but I will later tonight if anyone is interested in doing their own.

Thanks to all here,
devilsrighthand, aka Mike