Similar sounding volume consistencies but not quite!

I am repeatedly trying to find new ways to make audio (music, not speech) to sound as consistent as possible which is literally impossible. The closest I have got to getting close to consistent playback volumes is using ITU-R BS.1770-2 Loudness in the Match Volume panel of CS6. Listening to a burnt CDR consisting of 20 in a row the results are pretty impressive but normally are are one or two let downs which are normally quieter rather than louder. What do I have at my disposal in CS6 to make the odd tracks that tiny bit louder so they fit in better with the other similar sounding songs? Thanks!