ALL DIFFICULTIES:
Because the audio isnt tied in properly you are forced to add 2 more timing points:
260 bpm with offset 29823 for the first new drum
260 bpm with offset 30514 so the map has consistent timing as the rest (meaning the crash falls on third ticks)
DO THIS AFTER YOU FINISH TIMELINE MODS!
DONT FORGET TO RESNAP objects after it.