in 00:34:485 - 00:45:519 part, current pattern is giving too big gap between Hard and Normal diff:
Normal diff only using LN+single 1/1 jacks however Hard diff using single hand-trill with 1/4 snaps.
To solve it, I'd like to suggest remove unusual 1/4 notes 00:34:571 (34571|1,35261|2,35950|3,36640|2) - to give better diff progression: 1/1 (NM) -> 1/2 (HD).
same as 00:37:330 (37330|10,38019|9,38709|8,39399|9) - / 00:40:778 (40778|10,41468|2,42157|1) -