Renderotica

so I have it and like the look, but it appears to attach quite far back on the arm, and quite far up too. makes it look a little odd when the arms are raised.

i've looked at the morph parameters but there doesn't seem to be any parameters that actually move the base position, and changing them individually with scale or translate just makes them go completely bonkers, definitely not tenable.

so, how do you move the position?