Firstly forgive me! I kept saying "anvil" when I meant to say "hammer" 🤦‍♂️

Anyway! That aside, it's not unusual to find a saw set that has a hammer too broad for small teeth. It's very simple, take it to bits and refine the hammer with a file. Less than 10 min gets you sorted.

Don't sweat if you take off a little too much off the hammer. There's a lot of wriggle room for adjustment.