Idle RPM on Jet Engines

[Gringo6]

I've looked in both the "aircraft" file and the ".air" file and cannot find anyplace to set the idle RPM on Jet Engines in FS 2k2.

I've downloaded Ray Lopez's RLQF-86 and the engine idles at 70% rpm and I want to set it down to something like 40%.

I don't think this is a simulator thing because other jets have idle rpm in that vicinity (about 40%).

Anybody know the answer ?

BillA (aka Gringo6)