Arr! Can't wait for this show to start airing again on my Bday, been far too long since they went off the air.
[A what-gate?]
Start by removing last timing section, the one with 50 261 offset, it's unnecessary.
00:01:874 (x)- Add a note, becomes (4).
00:04:793 (7) - Move 1/6th forward to 00:04:876.
00:14:551 (4) - Add a whistle sound?
00:19:055 (4) - Move 1/2 a grid up so it's aligned with the previous notes.
00:39:905 (8) - One part of me could see this slider shortened by one 1/3 and then adding a note to the previous end on the white tick, but I'm not sure, feels a little better to me.
[Oh. Crap...]
00:20:398 (1,2,3) - Move down 1 grid.
[Relax, sheriff]
00:09:046 (1,2,3,4,5,6,7,8) - Delete these. Copy the notes from previous 8 combo, place them on same start as what you deleted and flip horizontally.
00:42:908 (4,5) - Move (4,5) 2 grids to the right and (6) 1 grid to the right.
Ending sounds rather abrupt when going to zero in volume across the board and start sounds like it could use a slight boost in volume perhaps, up to 00:05:00 at least, on the spinners maybe just the ending-hit of them :/