Cam and lifter problem

Are the valve springs dual springs, or spring and damper. Cam should be broken in on dual spring setups with inner spring removed. Maybe theres not enough clearance between the retainer and the valve guide. I seem to recall I had to have the guides cut down on my 454 I had in my jetboat, and the cam did not have that much lift, around .520. I have heard that Comp Cams lifters do make some noise, just like Rhoads lifters. Good luck. Bob