hello, thanks for taking interest. i may be providing evidence for my own ignorance here but... dont you need the pilot position before carrying out the w&b? to establish the moment?
out of interest, at which point did you measure your 67"? where the seat back joins the floor? did you measure back from the instrument panel, the canard bulkhead or forward from the wing join? i have no plans to compare to so any help is appreciated.
regards...