Its down to a driver issue and has been present right through the development of SP3 through to BMS. The throttle does not get picked up until it is moved due to it being one of the few controls directly linked to Directx input. Make sure you have the latest drivers and software available to stop half the issues. Ill add a list below of installs and where to get them from. It doesnt stop the throttle problem but it makes the whole sim more stable and smoother. This program was originally made in the 1990ās and has gone through many and vast changes since.
Additional software to install.
Visual C++ Redistributable 2005 ONLY get this download from Microsfot Download Centre, regardless of installed Windows Version.
Visual C++ Redistributable 2008 SP1 ONLY get this download from Microsfot Download Centre, regardless of installed Windows Version.
Visual C++ Redistributable 2010 SP1 ONLY get this download from Microsfot Download Centre, regardless of installed Windows Version. (This one is mainly due to the driver issues of some HOTAS and Joysticks)
The company MAD CATZ have bought Saitek now and new drivers and programming software is available from their site, make sure you get the programmer to match the driver version you have installed, otherwise you will find that you get a program crash each time you run it. This applies to all users with windows Vista and above, XP users check out the archived drivers on the MAD CATZ site.
For the sake of safety please only download files from trusted sites or owners sites due to the amount of idiotic spam coders out there.