Collision Troubles

Hello,

I have been making a game with multiple vehicles, and I have been able to allow them to fly around and etc. My person (from character class) is able to collide perfectly with everything, however when moving the two pawns/vehicles into each other, they do not collide at all. Both meshes are set to block all and I have used the convex decomposition to apply the collision box.

I am utterly confused on how to get these objects to collide with each other.

Vehicles have their own collision under the Collision Presets

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