Thats odd.
Mine is 30 years old and works as well as the day I got it.
Maybe you were using the wrong set of chucks for the caliber you were pulling.
They come with three different size chucks for different size case rims.
rc
They changed the materials. Mine is about 20 years old and has pulled hundreds (maybe even a thousand?) of rounds now without issue.
Now they use cheap components that break, so they can sell you more STUFF.