Hmm the VTOL works quite well in my P3D 2.4.
I just need to be extremely carefull about the maximum weight.
Oh, now that you mention it, I believe I had to edit the DLL.xml or the EXE.xml, to add the modules for the RAZBAM planes. The installers for these planes don't know about P3D, so they didn't modify the correct XML files...
EDIT: here, ensure you've got these lines in your DLL.xml (the one for P3D).
<Launch.Addon>
<Name>RAZBAM AV-8B Harrier Control Manager</Name>
<Disabled>False</Disabled>
<ManualLoad>False</ManualLoad>
<Path>Addon Modules\RZAV8BCM.dll</Path>
<DllStartName>module_init</DllStartName>
<DllStopName>module_deinit</DllStopName>
</Launch.Addon>
<Launch.Addon>
<Name>RAZBAM A7 CorsairII Ordnance Manager</Name>
<Disabled>False</Disabled>
<ManualLoad>False</ManualLoad>
<Path>Addon Modules\A7_Ordnance_Mngr.dll</Path>
<DllStartName>module_init</DllStartName>
<DllStopName>module_deinit</DllStopName>
</Launch.Addon>
EDIT2: ah, and of course, ensure you've got these dll files in the Addon Modules\ folder in P3D