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NX CAM: Strange rapid movement colliding with part

NX CAM: Strange rapid movement colliding with part

NX CAM: Strange rapid movement colliding with part

(OP)
For the life of me, I'm unable to figure out how to prevent a tool from colliding into casting blank.
Have a look at the attached picture. I've exaggerated the clearance moves .200 (this avoids the collision, but it's more clearance than I really want) to better illustrate my problem.
You can see at the bottom left where the tool would hit the part if the clearance was not increased, before traveling away from the part about .050 then starting the final engagement move.
Any ideas what I'm doing wrong?

RE: NX CAM: Strange rapid movement colliding with part

(OP)
Answering my own question if anyone has a similar issue...
turning on the Additional Checking actions (Non Cutting Moves > More (tab) > Additional Checking) solved my problem. See the attached pic (I reduced the exaggerated .200 clearance).

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