Can anyone list any gay adult casting agencies or sources of casting for gay adult videos, or perhaps even advise on the best places to run ads for models for video work?

We are starting a new video line and are looking to start casting for the first feature right away, however, the boys we are getting in response to our online ads are not at all what we are seeking, even though I think the money we are offering is pretty good. $1000 and up..

Any help or advice?