"I replace them every time I buy a new box of balls."
I also find this interesting, and am interested in the reasoning. you can change it after every shot if you chose but I have never seen anything like this before.
Like tg, I would also like to hear more about this.
I'm not here to say it's right or wrong, I would just like to hear why / how something like this can be beneficial.
Ignorance, or simply not knowing something, can often be bliss, and I openly admit to being totally ignorant of this.
As has been mentioned, Vent Liners are not terribly expensive, and if the benefits are worth it, I would not be opposed to changing my liners more often that I do. It's just that up to now I have never seen a need.
So,
PLEASE elaborate a bit more on the rational for this.
Respectfully, Uncle Russ...