muse sounds percussion doesnt play properly

this most commonly happens in instrument change. Tam tam, suspended cymbals doesnt play at all. (measure 151) in measure before many instrument changes, suspended cymbals used to play. it just quit playing around the measures I have recorded. glockenspiel plays just fine in that same staff. no its not the tremolo because the tam tam's entrance has no tremolo.

this file and arrangement itself had gone through hundreds of revisions and have branched off multiple times with the "save to cloud" option. i have at least 8 files in the musescore cloud thing. I got this version from my november 2024 revision i think and reuploaded it. somewhere in the line, this version has gone through a downgrade to musescore 3 in xml format too. I have so much revisions i cant keep track of them. could that be causing the issues? this playback is not the only issue i have. key signatures kept appearing, especially in new staves, when i have deleted them beforehand. incorrect key signature (measure 197) I also wasn't able to add a key signature in the same glockenspiel part. so i had to make a new staff, copy the notes, and delete that staff. i dont know if this is the musescore 3 conversion problem too but measure numbers quit showing in huge portions of the score(measures 27-41. i have deleted these too, and replaced with system texts. so basically there are no "true" measure numbers left). could have i deleted them manually? i dont remember. but i thought changing the increments were gonna bring them back, well it only brought back some part of the score measure numbers.

screen recording here too:
https://drive.google.com/file/d/1DR8KIGY7klsPx7HFDVEcqKRM0360eK0L/view?…