Well, towards the end of this past summer, I noticed that I had a noise coming from under the hood on deceleration. I had a look and heard what seems to sound like something loose from the drivers side head. It does not make a noise when idling nor when you rev it up, only when it revs down. I have wondered if it was a collapsed lifter, I have the Comp R's. I checked the oil and no shavings or metal peices. I am not sure on what it could be, the rockers are adjusted fine and as I say the comp R's have been fine (done close to 7000 miles on them with no problems). I have been told it could be a sticky valve? Not overly sure, but is there something I can through the motor to see if it cures the problem. My heads swap was done only 2500 miles back. Would seafoam be an option or like I say is there a something else I can use.

Thanks guys