Just thought I would mention a service bulletin I came across issued by univair regarding their j-3 throttle cables. Apparently they have had a couple of failures and many of us own these cables. I don't know if this has already been posted? if so I apologize for the redundancy.
http://www.univairparts.com/bulletin_add/service_bullentin_p1.pdf
http://www.univairparts.com/bulletin_add/service_bullentin_p1.pdf