I have found the hair density within the 1” section of lace is thick enough to cover the remaining gaps in the tracks.
Once I have finished ventillating the lace, I compare it to the wig. In this case, I needed to add a little more hair to the lace section just above the ear. I also remove all of the hair currently attached to the wig that is in the area I want the lace to sit.
Sometimes I will do this prior to ventillating the lace, so I can use the hair. In this particular case, I had some longer hair that I was able to use for the lace section. I wanted hair long enough to tie into a high ponytail.
The next step is to sew the lace to the wig foundation. The foundation is typically less than 1”, allowing the lace to sit on either side of the foundation. I prefer this extra lace, I find that it allows me to build the wig to have a more natural shape. The foundation of wigs do not always look like a real hairline. They’re more of a ‘one size fits most’. That’s not my modus operandi.