Slapstik setup - diameter of hole

[CDN72SE]

Hi All,

I have a 72 and eventually I will be moving from column to Slapstik. Does anyone have the measurement of the hole that the rod rod and parts go through. Here is a picture of mine, I guess I could take an educated guess using the three screw holes as a perimeter but I'd rather be more exact.

I appreciate any help thanks, Alan.

[CDN72SE]

Wow, found my old thread, and 5 years later I am about to get the work done. I will add any info I get to this thread.  

Looks like it is totally in the wrong section.