Looks like they just have a generic sheet for either symmetric or asymmetric cores. Since the deadly aim is asymmetric I'd use this one:
http://www.hammerbowling.com/res/upl...rill_Sheet.pdf
They actually have 5 different asymmetric PDFs but they appear to be identical as far as I can tell.
http://www.hammerbowling.com/resourc...ll-sheets.html
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