stretchy arms please help

I apologize for posting again but I have been working on this problem for a week and I don't know how to fix it.  No matter what values I put in the stretchiness the arms are still too stretchy.  if everyone could please help I would greatly appreciate it.  

https://www.dropbox.com/sh/0p4meyu7xaeo57p/AAB07aqDGF8ajrOj0i5OQbHFa?dl=0