Harrier-GR3: restore the CoG.
Changing the version from YASIM_VERSION_ORIGINAL to YASIM_VERSION_32 or later (in r3825) moved the CoG by a few cm, enough to make vertical takeoff nigh impossible.
This minor change is an interim fix pending a complete overhaul of the FDM.
Authored by: lbrenta 2019-03-23
Parent: [r3849]
Child: [r3851]
