Don't Store a Camshaft for Too Long a Period

Another setback!

I was just taking inventory on parts for a small block build. I found about half of my new set of Lunati hydraulic lifters (still in the original box) had visible rust on the bottom (surface that rides on the camshaft). I could see the rust with the naked eye and I could feel it with my finger.

I don't know for sure the date, I purchased the lifters a year or two ago and stored them in the garage. Now I don't feel comfortable using those that have just begun to rust on the bottom (6 to 8 of 'em).