avatar shoulder moves differently.

- with only VR, the shoulder moves GREATLY

- with fullbody tracking, the shoulder moves SLIGHTLY

[why this is matter]

This problem makes it difficult to rig an avatar. To avoid this problem, we have to rig carefully and test with both VR and fullbody tracing over and over. This is really painful and time consuming. I saw many avatar creators suffer this problem (of course me too)

[what I want]

- the same shoulder move no matter when using only VR and fullbody tracking