the fans sound like they are performing normally. there is a function that when you are moving one or more fans may begin to rotate one way or another to simulate ambient air moving over them. this is only a visual function and does nothing to the internals.
there is still no recommendation on the numberboards. what trainz build number are you using? i really don't think it has anything to do with the scripts or your set-up in general.
if you have SP1 HF4 TS12 you can use the latest TFX lib which has some configurations in the game options area. enabling the debug mode will allow you to see the amps and engine temperature of the locomotive in the message box area.