i need help picking out the right roller cam for my setup, i wasnt going to get one but after getting advice from razor and 87nat and winning some money over the weekend im ready to pull the trigger on one but im not sure how to pick one.i want the best grind for my setup but at the same time not to big i wanna keep a good idle. my combo is on my sig and i just got some gn1 irons. also where do you guys suggest i buy a roller kit? thanks,tony