I thought there is a general way to solve a problem like this one.
There isn’t, as any carousel plugin is different.
I’m not overly familiar with this plugin or it’s options. But you’re trying to control more than one slider on one page? If you want to change the functionality of them by editing the source JS files, then ALL instances of the slider will be affected. You should check into the available options where you fire the carousels. See http://docs.dev7studios.com/jquery-plugins/caroufredsel, under “Play with settings“.