Thanks, Markoz. I will check that out.

On a side note, iI have noticed an issue when I load the aircraft at the runway threshold with engines running. When I accelerate for take off, the speed indicator and artificial horizon do not seem to be working. These only seem to start working when I leave the ground. Surely this can't be right? How am I supposed to know when I reach take off speed?

Am I doing something wrong here? Do I need to do something else to get those indicators working before commencing my take off run?

EDIT: I found the solution in another thread. I need to toggle the GEN1 and GEN2 switches on the overhead panel.