Seimens NX 12 | How to create custom fastener assemblies and reapply them

[Lochlan]

Hi there,

So I have created a bunch of holes with a diameter of 22. I am trying to use the Fastener Assembly command to add in my M20 nuts and bolts.
Problem is when I use the command it automatically creates the fasters as M22 (a diameter of 22mm.

I can use the edit reusable component command to set the size after they are created, but I have about 100 holes in this project to cater for.
Is there any way to further automate the process or perhaps bulk edit all of the fasteners from M22 to M20?

Any assistance is much appreciated!