I am with Lisa and Pat, there is definitely still some info missing.
Regarding UnderCover Basenjis having fanconi in their lines, yes of course there is. Almost all responsible breeders have fanconi in their lines and have bred carriers and affecteds. Remember until a couple years ago it was a total guessing game. And yes, she realized unfortunately before the test came out that Jack was a carrier. I have a clear Jack son. Jack was a big part of the research that helped create the test. Since the test came out there are 56 UnderCover dogs that have been tested for fanconi. And Gale has personally paid for quite a few of those who are not her own dogs. I think she has tested any and all dogs of her breeding that are intact, whether or not there are any plans of being bred. She has tested whole litters as well. She cares very much about her puppies and I'm sure she'd be happy to talk to you if you have any concerns.
If you look at many of the popular sires breeders have used over the years, you'll see a lot of carriers and affecteds.