I assume fullandfuller's 26MM and DrBob's 1.012 are the same as most people's 1" pin separation. I further assume that fullandfuller's 29MM and 29.5MM measurements are the common 1 1/8" separation as measured by most people. We still have five different PS if we include Miller's "about 1 1/16" measurement. Bar and breech ball measurements are apparently all over the map on Lefevers. The reason the survey didn't go to completion with an eight gauge, my light ten, and XX frames is that the forum was deleted while the survey was being conducted and was lost to those who did not print the thread.