I have come to the realization that I am better off doing DBE on individual RGB images before combining. In this quest I also have noted that if one of the sample includes a small star the gradient removal is screwed up. So I have been looking at the individual samples in the window that shows the individual pixels and moving the sample when a small star shows up. This really helps.
However, the process is tedious. I was hoping the arrow buttons or something worked to move the cursor arround like the delete button does for removals.... any easter Eggs here?