That's what my lifters looked like for 2 yrs in a row, after using CompCams POS that they called lifters. Then try to talk to the company about them....told me the lifters would last 800 miles and 2000 miles was excellent. After doing my homework the best lifters I could find were Crower. They have a pressurized oiling system to the roller. Took them out about a month ago after a couple thousand miles, to check them, and they look like new.
Lack of
oil is what kills the roller lifter, if you're using
oil restrictors in the galley take them out. Low rpms also helps kill the lifter, because it isn't getting the
oil thrown off the crank on them.