Quick release for propeller from Iris Paramotor fits

I love my Iris quick release! Highly recommended!

How tight should this be done up and what is a good way to gage it?

I found that if I tighten it hand tight with the cam closed and use the cam handle as a lever that it gets so tight that it’s difficult to open the cam. So I can get it just as tight by twisting as I can using the cam as intended. I remove it using the cam as intended.