Lifter tic

Bought this cam and lifters 3 years ago when I started this mess.The lifters bleed down over night and rattle like hell for about 2 seconds the all quiet. But when the car gets warm then the one lifter starts ticking not bad but enugh to bother me. Thats what I was thinking I was gona have to do. Guess I'll pull the cover this week and have a look see. Will have to keep it running for the Mopar show at Gunthers this week end though.