Top Polish Pretoria Marble (http://www.lightemprador.com)

I have done great top polishes on countles Granite (http://tanbrown.org) s and (http://maplered.com) a lot of Marble (http://www.lightemprador.com) s, but the one we are working on right now is kicking my butt. It is Pretoria (Much like Nero Marquina) . It gets shiny, but doesn't have quite the deep gloss as the factory polish.
I have tried both tin oxide and (http://maplered.com) the diaglo buff compound for Marble (http://www.lightemprador.com) (Oxide worked better) but I still haven't got the shine to the level I want it.

Looking for some advice on this one.

Thanks.
_________________
Rock On!

Tim Wendt
Premier Stone Design
320-251-4530
e:mail psdGranite (http://tanbrown.org) @clearwire.net