I am using a moving window (analysis window) as from your explanation, I was only concern for the similar path with the Large eff volume.
By the way these are some example of LER: I have noticed that usually LER pinpoint very well tops and bottoms, while it should indicate the opposite.
I wonder if I am wrong somewhere: can you post please a picture of a LER for the X serie (or any other you prefer) you provide previously?