1 . Select the Midi song you would like to edit
2 . Open Song Creator ( Under Functions)
3 . Use the Tab Button , Head Over to Sys/ex page
4 . You Could use the Filter Option. And selete Tempo to be visible only. ( makes it easier)
5. Using Buttons A and B, And see if the Tempo is Highlighted.
6. Click Insert , A Copy of the same tempo will be added.
7 You can then Adjust. Bar Beat Clock and Tempo Value.
8. Click save ( You can rename it to avoid deleting the Original )
Hope this helps you.
Regards Norman!