When scaling size with Pehkui commands or mods that use Pehkui the tendon whip has some inconsistencies. The origin of its 3D model when doing the whip attack will always originate from X distance and in X position from the player, but this position code does not scale / check for player scale when adjusting size. If player is tiny, the whip while originate from far away and high above and opposite when big. The size of the 3D model of the whip attack could also technically change size with scaled player size, though that wouldn't change reach and it could probably look super thin or super thick when scaling.