Can anyone recommend a particularly good pattern for big-guys' flannel jammy pants? The feature I'm most interested in is a roomy behind. It seems like most pants patterns are proud of how "easy" they are but when it comes down to it, they're TOO simple in line and there's no room if the wearer has any - well, junk in the trunk. It's OK if a pattern requires some effort - I just want good fit. 'Tis the season, after all! Thanks ladies!