100 % Cenvat Credit Can I Take

My Co is Providing Both Trading and Services Activity and My Input And Output Services come under same heading ( Repair and Maintances )

My ? is Can i take the Benifit of Cenvat Credit Rule 6(5) because in  given 17   services we can take 100 % C.C

so plz guide me can i take 100 % C.C. ? if u have any alternative way to save my tax liability plz inform me