@Ozzy14 If you are talking about pavehawk canadian helicopter mod. Then , since it replaces the Annihilator helicopter. You need to use a trainer. I prefer simple trainer but enhanced native trainer is also . very good. Use the trainer and go to spawn vehicle by name, type Annihilator and press enter. I hope it helped. And yes if you replaced the handling.meta file and used the one from pavehawk folder. Your handling will be changed, for all vehicles