So i am try but failing at setting my tool lengths from the gauge line with a tool setter and m6 script.
i have measured the spindle face (bt30 spindle) in machin coordinates at -161.2219, and when i probe the tool ( with tool offsets off) the machine coordinates are -65.4 . However the tool length being set in the tool table is -30 ish.... it should be  +90 ish.... not sure whats happening

Question, should i have tool lenght offsets on or off when probing?
How do i get the tool lengths to reflect actual lengths from the gauge line?