Only last animation working for VRCfury's advanced visemes

Help!
1

So i am putting together my first ever avatar. it is an existing model from another game, so i (think) i have to animate the visemes myself for lipsync (no issue i can deal with that) but after putting in some of my animation clips into vrcfury i noticed that the only one of the animations that would work, would be the animation tied to “U” none of the other options seem to work. i tested if it was perhaps my animations, but when i moved them into the “U” slot they would come up, so it’s not my animations, it’s just stuck on only using U. is there any way to fix this? thank you in advance