Naida V SP with Slim Tubes

Thanks,
I got a set of slim tips with a pair of aids I bought. They said Phonak on them and assumed they were off the shelf items. Learn something new every day. As a self programmer, is there a source for having these or other molds made? I have read about http://www.westone.com/content/35.html . Are there other places worth looking into?
Thanks again