ipcc nov 2010

sir, this is my 3rd attampt. nov,09 acc-41 law-43 cost&fm-26 tax-47 may,10 acc-59 law-45 cost&fm-27 tax-51 this is the story so far in nov attemt a was very new to CA atmosper.so,i under stand the standard and give may 10 attempt mind u i have never taken any coching classes.but this time also same result in cost and fm.i didnt understand why?i give full 100 marks answer this time and 85% the quistions knon to me.then why? what was my falt? mind u that i got 78 in cost and 59 in FM in B.COM(Calcutta University) and i love this subject understand it fairly well. plz guide me what step to be taken?i dont want to quit.i want to study more and more.