Patrick is correct -- there appear to be 7 cut
positions, one of which
is actually uncut.
It's a very shallow cut on the key I've just looked at. But it is there.
Looking down the barrel of the key with the tab in the 12:00 position,
and reading clockwise, I measure approximately 0.8", 0.0", 0.11",
0.44",
0.11", 0.8", and 0.11".
I would re-check that 0.44" one. For one thing no cut is anything like
0.4" deep. And for anther that cut is shallower than the 2 on either side
of it, whcih you say are 0.11"
-tony