I just ran a test. I did an Auto-Start and after the engines were running for a few minutes I simply moved the condition levers to fuel-cutoff. The engine and prop rpm decreased as expected and the gauges indicated the proper values. The engine and prop sounds coincided with the engine and prop rpm as would be expected. Besides being one of the longest sentences I have ever read in a forum post, it is very confusing. Are you saying the gauges are, or are not, working properly? Are you saying the engine sound is, or is not, coincidental with the engine rpm? Please re-state what you are trying to convey. As I stated above, the sounds seem to be working as they should.