I don't know much about porting characters with a rel but you should do it that way with all your ports iv pretty much given up on shadow over Marth iv decided to keep him I'm doing shadow over fox now and may try silver over diddy and rayman over pit
i dont know how to patch char .rel files(yet) but i will maybe learn it
since afew know how to do it now like Marth over Jiggy
i am going to to make ShadowKong V7
and will fix up-B more and try to fix that slowfall if i can´t fix it i just do it so he go in helpless mode as in V5
and i will also fix chaos spear
with two inc. Sonic PSA (you needing the ShadowKong Friendly Sonic PSA if chaos spear need to be fixed)
Normal Sonic moveset friendly for ShadowKong(sonic without running GFX and running/SideSmashHold animation will be the same as Sdo0m´s PSA so running/side-SmashHold still look good without GFX)
and Sdo0m´s Sonic PSA(removed you are too slow animation taunt to Sdo0m´s up-Taunt and got the old up-Taunt back)
after ShadowKong i will work on the lastest attacks for SMBZ: Mario and fix his FS more then Goku since i still needing ANimations for Goku he is not done yet