Hey! Uh, got a bit of bad news, I can't seem to get multiple shadows to render from one shader, with the way STM's shaders are currently configured. (I really want to do a total rebuild, sometime, but haven't had the time...) For that issue, having a script like you mentioned to dupe the STM object is probably best if shadows are that important! Really sorry about that, I'm trying to research it and one shadow cast might just be the limit on a shader?