Salsero

Hi there
I am fairly new to this about 3 months in ,no momentous moments yet but a lot of pleasure,my question is once i get the involuntries going i experience a pulling in and what feels like a clamping of the Aneros which at times feels a little uncomfortable ,do i relax the grip or just let the Aneros have it’s way.?

Source: https://www.aneros.com/salsero-2/