Hydraulic lifter problem.

Hi.
340. HFT lunati. Lifters summit 2011. Most is stock inside. CR 10.2:1 . Car been sitting for a couple of weeks. Noicy at start up but get better after a while. Trying to figure out what to do.
In the process i see that the grove on the lifter is leaving the hole for the oil when it starts to lift. Blocking the grove. NOT full time oiling? Trying to find info in my books and trying here also.

Johan