Hi Ernie,
What are the pre-conditions making the following parameters work? I included both in my Citation X related aircraft_ID.cfg but with no success.

SetDestLoadTowerViewDist
(I added: "=9" and expected a nice view on the approach from the tower of the destination airport when pressing the [s]-Key three times from 2D view)
Ok, got this one (I think) - you need a tower that has been implemented by the designers, right?
and

LoadFuelonFlightPlanLoad=1
(I loaded a flight plan with SMITHS FMS but nothing happened to the existing fuel status)
Any suggestions?