On the AK1.net, jet set radio has various characters that are not in this collection but I don't know where the original links are.
https://www.andersonkenya1.net/files/category/504-jet-set-radio/
Fixed it by finding this video:
and using is download link: http://www.mediafire.com/file/s57za7ju0nm0c31/Mugen_Ax2_Slots_Edited_By_Shin_Kurosaki.rar/file which fixed all my problems
I have never changed his and I don't know what to do. Here is the screenpack (https://www.mediafire.com/file/iaezizp86ofc1bk/Mugen_Ax2_screenpack.rar/file) I am using and UltraBIG for my select screen.