Sorry for late reply, I think your Normal is way too hard as a 'Normal' diff.
And it breaks sever NM diff guidelines:
Examples could be:
Long notes should be held for at least 1/2 of a beat.
Avoid anchors consisting of three or more notes.
Avoid using more than 5 consecutive 1/4 notes.
etc.
Such guideline break can be find everywhere. So I am not gonna to list them all.
Diff spread is a kinda serious for ranked maps.
Since your current diffs are already quite decent.
I think the best way to fix this problem is:
Adding a new 'Normal' diff. And rename the current 'Normal' to 'Hard' and rename the current 'Hard' to 'Hyper'.
Take your time. Kindly pm me when you've done everything or have any question.
Btw, https://osu.ppy.sh/help/wiki/Ranking_Criteria/Scaling_BPM
updated Normal diff. replaced all 1/4 LNs to normal notes. got rid of many anchors. there are few anchors consisting 3 times.
consecutive 1/4 notes are still here but changed to more comfortable patterns.
as you know, guideline is not a thing something absolute. since it's 140 BPM, I think this is fine enough.