Fresh 440. Stealth heads. Comp hydraulic Xtreme Energy™ Hi-Lift XE275HL. It has ticks that will not go away! It's louder than the solid lifter cam I ran in my last 440. I've changed springs. I tried different anti-pump lifters. I tried different preload with crane adjustable valvetrain. I even pulled the adjustable and tried the factory pushrods and rockers. The noise seems to come from the middle of both valve covers. What am I missing? Could it be a cam bearing not aligned properly? I doubt I'll be able to sell the car when I'm ready soudning like this.