What? Did you modify the stock hydraulic lifter to solid then? I thought you just used studs for the cam fasteners for ease of installation. Any how your motor has that identical high reving music chatter that mine does. I used the HKS lash killers and paid $480. I spent 3 days shimming to clearances; .007 in. intake and .008 in. exhaust. It was worth it all in the end powerband owns.