Stopping Geof's Deb from Idling at Redline

See thread at http://ftp.avsim.com/dcforum/DCForumID8/4758.htmlI found that I can stop the deb from idling at red-line if I increase the Y values of the table ID 509 in the .air file.However, any values (of those I have tried)which stop the red-line idle, also haveone of the following unfortunate side effects:1. Insufficient top end power and/or low top-end RPM (like 2400...should be something like 2700),or2. RPM drifts slowly downward below 1000 until motorstops.There may well be some very critical, very narrow, value range thatmay stop the red-line idle without the side effects but I haven'tfound it yet.I was wondering if anybody else has been investigating this problem... Or perhaps someone with good knowledge of how table 509 interacts with the rest of the model, might be able to suggest where else the problem might lie.The fact that idle RPM wants to drift somewhere... either up or down...is that a useful clue?? Art.