M.M.,
I don't know why the links I posted above don't work for you.
I just rechecked each, and they work for me.
Is this the meter that you are using?
http://manuals.hobbico.com/gpm/gpmr4020-manual.pdf
If you find it to be symmetrical, may be the wash-in is intentional, as a way to promote snap rolls.
It almost seems that one option would be to flip the wing and have wash-out instead, but then, there is the inverted dihedral, servos and landing gear.[
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