I excluded them and that went really well (except for outlet 5. It won’t exclude for some reason.) 2 of the outlets were found easily. But I now have the other 2 plugged into the wall within 12" of the hub and it can’t find them. I have pushed the center program buttons so often the last 24 hours that my finger is sore (no joke). Yes, the green LEDs are blinking…While it was 4 years ago that I went through this pain with hub v1, one would think that it wouldn’t be this hard with the second generation hub. I am about ready to throw this while lot out and look for another solution. I still have other sensors to add, door locks, light switches, etc. All were working fine with hub v1. I should have left well-enough alone, shouldn’t I?
Odd, maybe try switching the ones that were found to location that are giving you trouble and try again to install/wire other device to known good location.
Also maybe try z-wave repair utility to see what results you get
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I recently did a migration and found that some devices were excluded easier using a minimote than the hub. If you have a minimote it is worth a shot.
Thanks for the idea. I have muttered and threatened and finally did get 2 more of the outlets to finally pair. I think that the hub is just slow. I find that you can’t exclude things too quickly. It seems that I can actually walk faster from switch to switch than it can update. Anyway, I did finally make some headway today and none of the switches are out on the front lawn. 
Oddly enough, the Kwikset locks were excluded and then paired while they were still installed in the doors (but then I can’t seem to get this last outlet to respond to exclude or pair). It’s better than it was, but this was more painful than it needed to be.