High reputation is no guarantee against jerky behavior. So, if one day there should be a minor edit button which doesn't create a bump, I'd hope it would be available only to the OP.
]]>Anyway, one alternative is to post your question/answer on faketestsite.stackexchange.com (if I remember the URL properly), and tweak it there, AND THEN WAIT, and then post it once you feel enough tweaks have been made. The waiting part is hard, I know, but it does allow you to satisfy some of the OCD tendencies without disturbing the MathOverflow community at large. (It might bother those who follow faketestsite, but those people should not be bothered by question reordering there.)
Gerhard "Sometimes Tilts At Behavioral Windmills" Paseman, 2011.03.22
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