Yes, Mp3val has also helped me many times. If you want you can add it to your Tools in MusicBee (Preferences/Tools/External Applications) so you can check files right from MusicBee (select file(s), right-click. Send To->External Tool). Here is what I have in External Applications for it:
Name: Mp3val-fix
Application path: C:\Windows\System32\cmd.exe
Parameters: /k c:\mp3val\mp3val.exe "<URLs>" -f -nb
This will open a command window and run Mp3val against the files you have selected, fixing them if needed, and skipping the creation of a backup file; the window will stay open afterwards until you exit it so you can see what transpired. If you do want a backup created, remove the "-nb" option. Change the path to mp3val.exe to wherever you have it on your system. If problems were fixed, be sure to re-scan the files in MusicBee so it picks up the changes.