One thing I did with my RR24M that gives it more of that growl(balls) is replace the floyds sustain block(steel) with a big brass block from floyd upgrades.com
It sounds sooooo much better than my LTD. Just fatter with more bite to it, and it sustains even longer than it did, which was alot considering its a neck thru. It just has a lot more fuller of a sound and everthing rings at the same volume. Before it seemed like certain freqs from the guitar rang louder than others.
Soon I will be getting one for my Xiphos, once I replace the Edge 3 with a floyd, so it should sound pretty kick ass being mahogany and all with the new sustain block.
It was the best $40.00 upgrade I have ever done to anything. I highly suggest everyone try one out if they can. Makes a world of difference