MD3 Mastering

[The girl next door]

I know this doesn't belong on this discussion Mr DS but i'm going to put it here anyway because most of yous look at this discussion the most.
And yes we have asked on the Powercore forum,but noone will answer us.
SO
I've Just invested in an MD3 mastering tool for the Powercore. Great bit of kit !!!
But how should we go about tweaking the settings what should we look out for..We have noticed that the compressor is very powerful ,sometimes we enable it and it sounds like "Radio Baghdad " so how should we tweak our settings (Thresh,Gains,Ratio,attack and release-LO,MID,HI) for Vocal trance.....
Also the Expander/compressor settup Lo Xover,Hi Xover,Crest,Auto gain,Ref level
............................
We have also split the signal too input mode M/S unlinked
and Output mode to M/S decode
as Robbie shows in the video http://www.tcelectronic.com/tccinema...inema/PoCo/md3