Camera Definition options not working

I'm adding a camera to an FSX aircraft I've built, but am having some trouble with some of the options, as described in the SDK.

For example: "AllowZoom = No" doesn't work. It still allows the user to use +/- to zoom. Also the InitialXYZ seems to be ignored if the "Origin = Center".

I'm trying to setup an external spot plane view that can't be moved or zoomed. (As I'm feeding in virtual cockpit view parameters via FSUIPC4 and they mess with whatever view window is selected, and I don't want this one changed.)

Anybody noticed this?