new valve springs - thinner than old

[FattyBoomBatty]

I just got my new "heavy duty" valve springs in the mail, opened the package and checked them out. They looked a little thin from what I remembered, so i compared them to the ones on the head in my garage and it do indeed look thinner than the stock ones.

Should this concern me? There was a label on the box that i'm sure the guy I bought them from scratched off, but it says pressure 100lbs. So, i believe they are the 100lb springs, and they fit in the retainers.

thanks.