Anyone know of a way I can remove the pit marks in my alloy's? They have a nice amount of black pitting that I can't remove with wheel cleaner and scrubing.

 

You need something like Whitney's White Tire Bleach, I can't remember the exact name, but it has some acidic properties and takes off hard to get rid off black junk, brake dust, silicone on the tires, etc. After cleaning you should get some a protective coating on there to keep it from happening again, like some wax, or just paint your alloy's black like Shahzad did recently and don't worry about it at all!

Griot's wheel cleaner also works pretty good on everyday grease and grime, but not sure about what you are talking about.