Ca final revaluation

Dear friends, I have cleared group 2 in this attempt at 200 and in group 1 i got 188, all subjects cleared but missed on aggregate. My query is, are there any chances of reduction in marks during Revaluation, as i have got 41 in costing while i was expecting 55 to 60 marks. Same is the case with accounts. Shall i apply for Revaluation and do any of you have a confirm information that marks can or can't be reduced in Revaluation. Expecting an early reply. Thanks