I noticed the same thing yesterday. I had the front end jacked up to perform maintenance and some modifications. The front end was up in the air for a week or longer. I started her up while the front was still elevated and noticed the lifter tick as well. Once lowered and warmed up the ticking disappeared. Not sure if this is normal or not. If a level parking spot is available then I would park there to help keep the oil from draining. Cheers