It took me a few days to find the time to work on the project again sadly but I got a rework that has worked great.
I swapped out the Scene objects for Static Meshes that will be hidden in game (makes it a lot nicer when setting up positions). But the biggest thing that fixed a lot of issues is that I set it up so after the VehicleParent spawns the Chassis it attaches itself to the Chassis as a child pawn. This allows the Chassis to act as the primary mesh for physics.
I also set up modules such as the wheels to spawn using the world transform of the attach point but attach directly to the chassis (using “Keep World Position” on Attach To Actor)
Images attached show the process I used. as well as an example of what the new ModuleAttachNodes look like in the editor.
Thanks for the help though, I probably wouldn’t have gone back to look at the hierarchy of the actors if you hadn’t mentioned it.
