N-filter questions

Hey all, I’ve been lurking around looking at all these beautiful packs being made and am going to try my hand at one. The question I have concerning the N-filter is with Stefan’s plans. It looks like the n-filter is slightly hanging over the edge of the spacer. I definitely have some over hanging on mine but my n-filter has a 3" outside diameter.

Has anyone else out there noticed this over hang? If you have an n-filter that’s 2.75" on the outside diameter do you notice it as much? what have you been using to get as close as you can to the correct size?