Editing rez files

Ok so I attempted to put the word "Cock" or a Specs uniform, the outcome was the whole Char_t file not showing up, I then find out later when I try to open with WinRez LT that it is corrupted. So I may be doing this wrong, Can someone tell me what I do next, this is what ive done:

1. Use WInRez LT to take the Specialists body out of Char_t_body.rez
2. I use DTX Viewer to see if its what I want, and it is so now I close DTX Viewer
3. I use the Nexon to Lintech converter
4. I open the Lintech version in Photoshop
5. I save the file as a .DTX and close
6. I convert the Lintech version to Nexon version
7. I open the new Spec body with the DTX Viewer, and it looks fine in how i made it.
8. I open WinRez, go back to the same spot, and drag the file inside and overwrite

I think the last step is where I messed up, please help me :P