Yep, the phantom shins pick the value for rotations from the parent figure and supply the action that runs the JCM. I think Nerd did a dress that everthing below the waist was run by JCM, it must have been a ton of work! I started setting the dress I mentioned that way, and gave it up as a task thet would take more time that I wanted to put in it. I think the Posette can sit in his, SMV can't quite sit in any I've done, though she gets pretty close. I also fit my stuff a lot closer than some of the others, this has a lot to do with how good your joint settings and morphs have to be. Anyway, I haven't even thought about doing gravity JCM, SMV is really just setup for outer space!