Getting a PH20 to play nice

Getting a PH20 to play nice

I spend a fair amount of time trying to get our PH20 head to play nice with CMM Manager. 

Attached is a case where 1/2 the points on the OD were inaccessible when measuring 101mm and -2mm depth, but all the points were accessible at 97mm and +2mm depth.  It's the exact same set of points.

I find myself fiddling with the depth like that or the incidence angle or try measuring on Full Auto and then switching back to the PH20 

I prefer using the PH20 hits to the bridge hits you get with Full Auto because our tests show it is more accurate, plus the finished program is faster.

If anyone has any advice on how to get CMM Manager more consistent with path planning that would be apreciated