yeah really, what's goin on out there?

Here's something that might be worth discussing: Roll Center, specifically rear roll center. There's been some talk about it lately, with the new Slapmaster flex plate, with regard to loose traction at the end of a session. We've been using a low roll center t-bar that I devised on the team cars for a while now and it seems to help, although not in all situations. Has anybody else experimented with this? Maybe some one can explain how roll center affects the cars handling.