Hello Lawrence!
I agree with you as far as Ed Craig site is concerned...
This site, his books, and video's are repositories for anyone looking for expert advice on MIG/MAG welding issues...
The Lincoln people know there stuff too!!! Did you try Miller or ESAB?
In fact Charles, you can ask Ed Craig's opinion on his website for that matter... Just make sure you're concise in your query... He will reply rather quickly...
In any event, Good luck to you!!!!!
Respectfully,
SSBN727 Run Silent... Run Deep!!!