should have flushed it,but in a mad dash..

could be crap in a new lifter

could be a worn cam lobe and lifter from metal shavings

could be on the way to anothe cam wipe out

could just be an exhast leak you hear at speed

could be your a nervos nelly

could be your correct

could be the oil wiping the lobes

if this is x2 its a 50/50 chance at this time in the game..could drive it for yrs with a tick or be broke down and doing a rebuild in a couple days

not what you want to hear for sure...but IIRC,I mentioned that before you swaped cams in a mad rush

got spare moder?