Well my car has not been running to it's full potential...And NO I don't think I am use to my car...I started thinking and I found out that my pushrods are 6.200 inches instead of the standard 6.250 and I also have shims that are about 15 thousandths...SO are my vavles not opening all the way? I have pedistal mount rockers and am thinking about changing those to stud mount using cranes Rocker Arm Guideplate Conversion Kits http://www.cranecams.com/?show=browseParts&lvl=2&prt=24&showAll=yes anybody used that kit that converts pedistal mount rockes to stud mount? I think that is where my problem lies...