Quest build using 4 bones?

Hey. So when I play my scene in the editor, my characters skinning looks fine. But when I send the build to the Quest I get jagged joint bends, like the Quest is only using 1 or 2 bone skin weighting. How do I build the scene with full skinning? I thought it would be under the Quality Settings, So I changed that to Ultra, but that did work. Any thoughts would be appreciated. Thanks!