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Great model, load of details, but I'm also having the bug where I constantly get out of the helicopter immedialtely after entering, is there anything I'm doing wrong?

Good mod but there are a lot of mod that change a few things in the vehicles.meta.
So for anyone who wants to combine this mod with others you just have to add FLAG_PEDS_CAN_STAND_ON_TOP to the <flags> section of a vehicle of your choice (or all).