Noise Reduction - Doesn't get quite all the noise

I'm having trouble removing 60Hz hum. I just got Soundtrack Pro after trying Soundtrack that was included in FCE. I didn't have much luck with Soundtrack and the Apple quick tour made noise reduction in ST Pro look like child's play.
I have a friend on the PC and he ran my audio thru Adobe Audition and it did a really good job. I downloaded the 30 day demo and it's Noise Reduction is simple and works well. But, I kind of have a need to complete my entire project on a Mac...
Anyway, I select a portion with just my hum and do 'Set Noise Print'. Then I remove the noise from my enitre clip. I typicall have to move the slider down to -25db. At that point it starts to effect my dialog and there is a small amount of buzz or hum still left around.
How in the world can I fix this? I've been told that my hum may be at 60Hz and at all the harmonics of 60Hz. I can't seem to find a Notch Filter in Pro, where Soundtrack does have one. So, how can I eliminate 60Hz and all the harmonics?
Also, any idea why Adobe Audition does a better job than Soundtrack Pro in this quick NR area? Am I missing something that I should be doing in Soundtrack Pro?
I'm a total audio newbie so any help is appriecaited.

I've had good luck using the EQ editor, where you can adjust various parameters like the spread of the frequency, the amplitude, and also check for other frequencies (try overtones undertones of the main sound).
If you need to cut out so much that it interferes with the quality of your dialogue, you can fool the ear by adding bit of high register to make it more articulate, or middle-low register to make it more resonant.
By saving the presents you create, you can easilty try different combinations.
a bunch   Mac OS X (10.4.4)  
  Mac OS X (10.4.3)  

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