Hi Fred,
Thanks for the graphics. They help me understand your problem much clearer.
This might help...
When in Notation Mode, have a look under the Options button (#1 on the image below).
Check that the Tick Offset (#2) is set to zero. If the value is non-zero, this could create the problem shown in your images.
It would also be worthwhile seeing if having the "Fine Resolution" (#3) off helps. It may or may not but it's something I'd try.
Hope this helps,
Noel