Lifter noise

I just got my new 360 running and after 100 miles when I staret it after sitting for more than a couple of hours I have a loud lifter tick. After 15-30 seconds the sound goes away but I need to fix this. Has anyone had trouble with the Lunati lifters in the Voo-do kits I have the 60400 or 250dur cam and lifters with stock 340 springs.