After going back and looking yesterday, it appears the Bentonite did cause most of the Soilfloc to settle where I needed it, but I did have some residue blow into one corner, which caused a heavier application there than intended. I definitely recommend the Bentonite. I used a quarter cup measure and flung out part A, then part B, then went back and flung handfuls of Bentonite over the slowly sinking slurry. I am pumping more water in today to see how it holds. I Think my leaks are mostly under the dam due to old roots through the old part of the dam and poor compaction in the new part.
