Not sure if you are up for a couple hour drive to get it done - but Leith Porsche in Cary will do it.
www.leithporsche.com Chris is the service guy.
Don't know if it's a good deal or not, but they quoted me ~$210 for a new 4 stalk if you don't wanna mess with rocker switches or such. Not sure on the labor, but thought they quoted me an hour or two.
Or if you want to do it for a bit cheaper, I know one of the mechanics that just left the dealership and went to a private shop about 2 blocks away from the dealership. If you want their number, PM me and I will get the number when I go back to work tomorrow.