SDConcepts,
Same as you I can easily get the circles pocketed. Now to try finding out what was wrong with the slots i just duplicated your slot, only one and worked on that in Lazycam Mill.
As you can see in the attached i changed the start point to the lead in, cutter size is .125" and allowed a lead in of .2"
, zero tolerance. Note that the start point on the profile is in between / half way on the tangent to both half circles.
See attached pic and look at my arrows. Will this work when you a whole bunch on an angle.....don't know.
Attached for what it's worth,.......leaving some fun for you,
RICH