You might want to find a schematic, like the one in the link.
http://www.ezgogolfcartguide.com/wp-...e-Mounting.jpg
I'm no expert on the RXV but it looks like you are missing some parts and it may have been installed wrong at some point too? Sort of looks like things are not right but you are definitely missing some parts like the head of the bolt we see the threads for sticking out the bottom of the mount setup.