Why do my finger inserts of same size fit different?

[chip82901]

Some of these guys hit the nail on the head. I've had similar issues as I've had some PSO's use vice, some use turbo. I'm actually going to order up some Ultimate inserts here in the next week or so and start swapping everything over, so that everything has the same feel. They are supposed to be a softer insert, so we shall see how they hold up

[NewToBowling]

And from what I hear there are variances depending on color as well. I try to stick to Turbo Clear Lifts.