Hi Joe
I think it is but don't seem to be able to see what is driving it.
I have smoothed the main spark tables, the idle tables and the Coast Down in the areas where it seems it could be occuring and it still will move 20 degrees instantly than come back.
Here's a couple screen shots
I have changed the cal some from before
EFI Live Scan 2B 3Dec2018.pdfEFI Live Scan 2A 3Dec2018.pdf