Transportation for Deathwatch

I had decided to go with the deathwatch having a Rhino to zoom about in. I have also decided to add some extra's to it. I found these from Scribor Mins. They are ok... but I am rather puzzled by the fact they dont sit perfectly in the centre of a rhino top hatch or why they made them too large to fit on the door panel of the rhino. If they had I would be reccomending them. http://