Dave Miller back again to report that I've somehow muddled through the 402 EGT script without having a clue about what I'm doing changing all the numbers over and over until stumbling on the right combination to make the Air Manager gauge match the C-340 plane panel readings. So while I'd rather have some understanding of script language, I'll take what I can get and move on now. If anyone else is having the same problem, I can supply these numbers. Thanks, Dave