my experience has been the same as Matt L...ie on a 210. so I dont know if
this is applicable for your model. it sure comes darn close.
for the 210, I know, there is no known a la carte replacement. as close as
you can get is an assembled part for something else. then separate them by
drilling out the large pin. go to your broken part....and drill to separate. now
swap out the damaged part with new and rivet together.
the part costs about $10. the labor is about an hour. depending on the time I
have, I may simply opt to replace the whole regulator arm for <$50.
as i understand, in your situation, it's the gray part...the one in which both ends
of the cable are secured, right?