I wasn't as close as I though I was, but ¾” isn't that bad either. I basically have 29 slat pairs I need to adjust the spacing to make is work. So if you look at the inside of the door, you'll see the 6 studs don't line up on the slat so the are in the middle of the overlap joint.
The 1st couple of attempts at laying out the holes didn't work either. What I'm trying to do is set up a component with all the holes (extra long) and a bottom marker. The bottom marker will line up with the bottom corner of the slat and the holes in the center of the slat. When I get the comp lined up with the slat, I'll open it and explode it, cut the whole comp. Edit the slat and then paste the comp in place and use intersect to make the holes. That a lot of work per slat I know, but until I can figure out an easier way. That's my only option I feel that will work.