To correct the chord density issue, you can download DDC v3.2 beta and replace the files in the ddc folder of your RSToolkit install. Then apply DD again on the psarc file. do you have a link for the 3.2 beta , 3.1 is the last one available on your ddc tool link .
I used the repair for 400 songs , 50 of them became corrupted , anything I can do with these to be able to play them again , of just redownload them ? also in some songs , I can now see all the repeating notes instead of the first then the blanks , new glitch ?