[maxmsp] >2 webcams

I'm working on an installation with a Windows machine which handles motion tracking with a series of webcams. I only need 3 or 4 running at a time, but so far have not been able to use more than two at once.

I know that there have been issues with multiple cams in Max, but most people have claimed their problems were a result of using many of the same cam or some restriction in the cam's drivers. As for the confusion over identical devices, I've tried this with 3 unique webcams as well and have only been able to use any two them at a time (doesn't matter which). Also, I've called logitech about this and they've explained that you should be able to use as many of their cams as you can muster simultaneously so long as the software you're using allows it (which I've found to be true).

What's really annoying is that devlist comes up with all connected cams (it will recognize devices on all 8 of my USB ports), but still only lets me open two at a time. I'm getting a little anxious as my deadline is approaching quickly. There has to be a way around this - thoughts?