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410 was on GMATPrep or the 1st attempt on "actual test"?
if that is the case and you are shooting for 530, I suggest postponing at least for a couple of weeks... in 2 days you can't conquer the world and that is true for GMAT... if you really concentrated and did your best getting 410 in GMATPrep today, it is just a sign you need to study a little more, a little harder... going over OG in 2 days will only confuse you... usually people use the last couple of days to gather the nerves and relax and you seem to plan to do the opposite...
the reason I say it that GMATPrep is the closest representative of the test, so one should take it seriously and in your case 120 point jump is quite large, especially in 2 days without factoring the "nerves"
Don't get me wrong... I sincerely wish you the best of luck should you decide to take it, but I warn you to be prepared to retake... this is, of course, if my assumption is true