I Should have also said all these I have found are for ZH,I have almost no experience with Generals,next item:
in Weapons Ini there are numerous Objects with:
ProjectileDetonationFX = [this objects fx]
listed twice, one probably overrides other but still a waste.
I found no Objects that use A10ThunderboltMissileWeapon,but if You use it in a Mod be aware that it has no ProjectileObject listed,it has ProjectileDetonationFX listed and the ProjectileObject A10ThunderboltMissile does exist in WeaponObjects Ini.
check that in that draw module tgere are no other speed factor ranges, especially in a DefaultConditionState, otherwie 1.0 1.0 might be needed to override it in other conditions.