While Andy has had good experiences in molding the shoes himself, we do recommend that you opt for the help of a second set of hands (if not an actual fitter) while the bike is in a training stand so the shape of your foot while in your riding position is accommodated. I wouldn’t call it a weighted or unweighted position per se, as your metatarsals won’t spread completely as though they are fully loaded, but they wont be entirely prone either.