Troy,
Looks like that is F5 -
mine is 126.5 mm not 138.55 - (this is adjusted to fit the taper of the two sets of turtle deck cores I have.)
I've been in a state of total flux regarding my former widths, there is where I am at, at the moment..... : )
I've just updated my templates (again), on my website download a new copy...
http://www.precisionaerobaticstructu...v2_formers.pdf