In reply to BallsOfSteel:
As mentioned, the fit is all about the heel cup, and not the length. Ignore the numbers, it's all about the letters. Get someone to fit it properly (the right colour, and the right size), as it sounds like the OP did all that, therefore the shop will certainly take them back on the 60 day comfort guarantee.
However I would say that the problem the OP had is with the combination of Superfeet and Omegas (did you get them thermo moulded with the Superfeet in?), and possibly the tight instep of the Omega shell.
They may not work with those boots, but if you want to persist with them for the benefits which they can give (not to everyone, but to a lot of people), then maybe try them with a different item of footwear.
Oh, and use up a bit more of the 60 days.