swap stackng with 02:51:618 (1,2,3), 02:51:618 (1,2,3) is much more intense in the song and 02:53:238 (4,5,6) has drop in intensity, so ctrl+g'ing stacks would make sense
02:51:618 (1,2,3) - Is a decrescendo lowering in pitch while 02:53:238 (4,5,6) - is the start of a new measure so I think the emphasis is okay as is.
03:04:308 (7,1) - I just spaced this instead since there's many unstacked triples and it causes less confusion.