I was motivated to read some of the old threads. Was looking for info on the extra bolt holes. Stumbled on a Facebook group for guys running Ritter blocks. I don’t have Facebook so it is hard to navigate. There was some talk about the upper extra bolt holes not lining up with the holes in the Ritter block. I think Brett Miller chimed in saying there is a water passage next to the holes in the head and moving it could brake into water easily.
That would scare me away from those if I was intending to use the extra holes. I would like to see more details on this stuff.