Retro Manufacturing radio/antenna

Anyone use the retro manufacturing thumb wheel radio and power antenna in their duster or barracuda? I’m trying to get the antenna plugged in and it doesn’t seem like it fits right. The male end seems like it should fit all the way into the female end but it’s not even close. There’s no way I can push it in any further that what’s in the pics. Any thoughts from those who have used it before?

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