Jeff, the 4 small holes on your bass drum look to me like the original mounts on your drum kit were not entirely Camco. To me it looks like the original owner might have ordered the kit virgin then installed a 1960s Ludwig Rail Mount and the Floor Tom Bracket on the Tom..Or had the tech at the shop where he ordered it do it...Brilliant, And Very Sturdy. I like it! Of course I've always been partial to the Ludwig rail mounts be cause they are minimalistic in design and hold incredibly well. I have brand spanking new, never used Camco floor tom leg brackets which as you can see in the photo fit perfectly. If yours has seen better days I would be happy to send you one if that's the mounting system that was originally used. Free of charge.
Thanks a bunch for the offer on the mount but I think the one I have is fine. However one of the floor tom leg mounts is pretty bad.