You need to edit 3 others files for all instruments/HUD work fine ( "Server.lua", "SnapViewsDefault.lua", "CustomHuman.lua") and it work very well with CombatAce external 3D model. As you said only not see tailhook light.
http://black-reapers.xooit.fr/t2001-Pit-3D-du-Su-27-pour-le-Su-33.htm#p25862