[Elecraft] KPA3(A) Extender Board for adjusting the output devices bias...?

[hawley, charles j jr]

Has anyone investigated getting/creating an extender board to enable adjusting the output device bias?
If I had such a board, then what would I be looking at to properly adjust the bias? Or, what is the idling requirement for both KPA3(A) amplifiers?
Or again, what are the alignment adjustments for these amplifiers?

Chuck Hawley
 c-hawley at illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles