IMO yellow Mini pins are the most aggressive tyre on dry astro and you will grip roll more...thats why we take 3 rows inner and outer off the front and 2 rows I&O off the rear. If you're grip rolling its probably due to set-up...you need stiffer springs, heavier oils, thicker roll bars, lower your ride height and decrease your droop. Then there still alot more you can do around camber and roll centre but that'll tame it a bit...have a look at this this is the RC set-up bible.
fourth one down on the "hudy set up book"
http://www.teamxray.com/teamxray/products/proddwnld.php?prod_id=1281&Xnet_Session=544c160ba17822c6bfcb22539ceb5d25