Tracy,
66 mm ford mustang throttle body, I believe suggested by you.  To busy flying to notice all the numbers.  Mostly concentrating on flying and temps.  Alt 8500 ft, 40 Oat, No idea about manifold pressure.  Mixture set at mid range, but not really looked at.  We have had a lot of weather here the last few days, but is looking better toward the end of the week.  I got the diagram and printed it and realize it is a fix, not a solution.  I'll get to the airport tomorrow and draw a diagram of my electrical system, with lengths, positioning, etc. I've never tried running without the main buss off.  I'll run it and see if there is a differance with only the Essential buss on.  Thanks for all the thoughts, all of you.

Don