00:52:514 (52514|2,52654|2,52793|2,52933|2,53073|2,53212|2,53352|2,53491|2,53631|2,53770|2) -
I can see that this section is really dense but that could've been avoided. Perhaps you can move 00:52:514 (52514|2) - to 0 and 00:53:352 (53352|2) - to either 0 or 3, though the former is recommended.
01:10:933 (70933|2,71073|2,71212|2,71352|2,71491|2,71631|2,71770|2,71910|2) - This one too. Maybe by moving 01:11:770 (71770|2) - .
01:47:491 (107491|0) - Perhaps you can move this to 3 to avoid 01:46:933 (106933|0,107073|0,107212|0,107352|0,107491|0,107631|0) - .
01:55:584 (115584|1,115724|1,115863|1,116003|1,116142|1,116282|1) - Holding right after tapping a bunch of times. Doesn't look so easy. I suggest moving 01:55:584 (115584|1) - to 3 to reduce this anchor even by a small amount.
02:31:026 (151026|2,151166|2,151305|2,151445|2,151584|2,151724|2) - This anchor is also something to consider.
02:34:235 (154235|2,154375|2,154514|2,154654|2,154793|2) - This one too.
02:35:212 (155212|2,155352|2,155491|2,155631|2,155770|2) - And this one. I just realized that the past 3 anchors (including this one) are all on [2]. My right index finger will die.
02:37:863 (157863|2,158003|2,158142|2,158282|2,158421|2,158561|2) - Another one on [2] again. Try moving 02:37:863 (157863|2,157933|1) - 1 column left and 02:38:421 (158421|2) - 1 column right.
02:40:514 (160514|1,160654|1,160793|1,160933|1,161073|1,161212|1,161352|1,161491|1,161631|1,161770|1) - Now this really is something. 10 notes in a row.
02:44:421 (164421|3,164561|3,164700|3,164840|3,164979|3) - This one should be easily fixable.
02:45:259 (165259|3,165398|3,165538|3,165677|3,165817|3) - This too.
02:48:747 (168747|2,168886|2,169026|2,169166|2,169305|2,169445|2) - Maybe this.
Suggestion in case you need it.02:55:445 (175445|3,175445|2,175584|3) - Holding with one finger and clicking and holding with another on the same hand doesn't feel all that comfortable. Not that it's a big issue though.
03:02:700 (182700|0,182840|0,182979|0,183119|0,183259|0) - Whew... 03:03:119 (183119|1) - Move to 3 and 03:03:259 (183259|0) - Move to 1?
03:20:212 (200212|1,200282|2,200352|1,200421|2,200491|1,200561|2,200631|1,200700|2) - Eh. Maybe you can spread these out?
03:27:398 (207398|2,207538|2,207677|2,207817|2,207956|2,208096|2) - Whoa.
Suggestion03:31:724 (211724|2,211863|2,212003|2,212142|2,212282|2) - It should be pretty predictable by now : anchors.
03:34:235 (214235|0,214375|0,214514|0,214654|0,214793|0,214933|0) - More anchors.
03:36:747 (216747|1,216886|1,217026|1,217166|1,217305|1,217445|1,217584|1,217724|1,217863|1) - That's a pretty long one.
03:40:235 (220235|2,220375|2,220514|2,220654|2,220793|2,220933|2) - Even more anchors.
03:43:166 (223166|2,223305|2,223445|2,223584|2,223724|2) - Anchors.
03:44:491 (224491|1,224631|1,224770|1,224910|1,225049|1) - ^
03:47:910 (227910|2,228049|2,228189|2,228328|2,228468|2) - ^
03:50:421 (230421|1,230561|1,230700|1,230840|1,230979|1,231119|1,231259|1) - ^
04:02:421 (242421|2,243119|3,243259|3,243398|3,243538|3) - Holding with one finger and clicking and holding with another on the same hand. Not really comfortable. I think I mentioned this before though.
04:09:119 (249119|1,250096|0,250235|0) - ^
04:11:352 (251352|2,252189|3,252328|3,252468|3) - ^
I know that I kinda got lazy with the suggestions at around the end so do feel free to poke me ingame or by PM if you need more.