new 10 inch 2002 splash weights 1/2 an ounce less than one from a few years ago

I have been using 2002s for probably 30 years and was bummed when I got a new 2002 in the mail the other day and noticed it felt light. I weighed it vs the one it was replace. Note the old one is 9.3 ounces vs 8.8, and the old one is even missing a bit where I had to drill out a crack that was spreading.

I play professionally so am beating my drums every day, and have noticed a similar degrade in quality from Evans heads as well.