yonex ezone dr 98

Hello guys! I had the chance to buy 2 more dr98s next to my 1. But unfortunately I have a little issue with them. All have different weights. I found something inside their handles but its not look the same. With string (17 gramms), head protector ( 4 gramms), overgrip ( 3 gramms), dampener 3...

I am still playing with the DR. Nothing even remotely close to being as good has popped up yet. Is the 2020 Ezone similar to the DR 98, or is it more of an iteration of the 2018 Ezone. Thanks!