Variable tightness for masturbator?

[Slappydash]

Hi

So I recently picked up two masturbators on one of the drops, a Leilani and a Gala.

On the tightness ranking chart it shows that Leilani should be looser than Gala.

But holy shit Leilani's entrance is so tight that I almost can't feel anything else and Gala is looser than Leilani.

I saw that some have some variable tightness potentially and I was wondering if this is just a defect or the variables.

If it is the variables does this only apply to the drops and not the custom orders?