Need Rangefinder Help :)

Hello everyone,
I'm working on my first Boba Build and I thought I would start with the helmet!...Of course.

I was lucky enough to buy a commission slot from Darth Voorhees and received it this Monday. Anyhow, I cant seem to keep the rangefinder from coming down hard every time the helmet tilts forward.

Any ideas on how to prevent this would be greatly appreciated. I have attached a few pictures to give you an idea of what kind of rangefinder base I'm working with.

Thanks,

_Omar

You can't just fasten the screw tighter from inside the helmet where the earpiece comes through?

Rubber washer.