Body tracker won't work for arms

I am a newbie! I am having trouble getting body tracker to work for arms. I have been experimenting with the included puppets and a couple from graphicmama. When I look at the rigging, it looks like it should work. When I calibrate, I see the nodes, but nothing happens with the arms. The character follows my head and my mouth, it also leans and follows my body...just nothing with the arms. They are draggable...but, I'm lost as to what to do for body tracking. Any advice.... if someone has a character that they know works, I"d love to try it... because I'm not exactly sure where the problem lies.