Maybe your edge needs just a little more, so not the 1K? Attempt at your own risk, but this is what I would do. Kill the edge very lightly on the side of your finisher. Check under the light, you should see an even reflection across the entire edge. Go to 4K to set it shaving again, keep checking after every 7-8 strokes, until the reflection is gone (keeping the number of strokes relatively low, because I dont know how fast you 4K is). After this, two rounds of Botan, and one round of each Tenjyou and Mejiro, finish on tomo, as you did before. So the key is getting a good bevel indeed, but the rest is still all about learning your stone, which I feel you dont need any help with, just practice. I hope it works out for you, go slow and good luck!