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I believe clearance was .20 inches, and that somehow became .14 in post. I didn't modify any of the post settings. 

 

Your post is very similar to mine.  you have the same slow retract at the threading rate, but in your example it looks like you are tapering off the threads.

 

.lines n23 and n28 taper upwards from the thread depth from z -.7133 to -.7587. I want my threads to just stop as I already have a relief cut at the end.