Guys, I picked up a Columbi-man 5183 with the swivel base but it is missing the center bolt. I am hoping somebody has one or a photo of what they look like as it appears there must have been some type of bushing to center a 9/16 bolt. The catalog shows the base came with a center bolt but no details 


Its also missing the plug for the second lock down hole. I assume that is just a panel plug but have never seen one or found any photos of those either.
Thanks



Its also missing the plug for the second lock down hole. I assume that is just a panel plug but have never seen one or found any photos of those either.
Thanks
