The problem is that the hinges can’t stay on target angle, which is annyoing during driving and it looks like it’s too powerful, but when it comes to drive on something “unusual” (eg. on video below, rails), it looks like hinges are too weak.
I am providing video for better view of whole situation.
Ask any question if you need more information about someting. Thanks
If the hinge is offset from the wheel centerline it’ll push against the hinge more than if it’s centered. Your hinges appear to be at the inner edge of each wheel.