I'm having a problem with this module adding itself to my other shipping methods.
In other words, if I have a rate set for the Indiividual Shipping, it's added to the total for other options chosen...ie USPS Choice. So instead of someone getting the calculated USPS total, they get the calculated USPS total PLUS the flat rate specified by this (individual shipping) contribution. It doesn't seem to matter what zone I have set for Individual Shipping.
If I disable the module without uninstalling it, I still get the amount added to the other methods. If I set the individual shipping value to zero, I then get a normal rate for my other options. I have to completely uninstall AND set the values to zero to get a normal rate for my other methods.
Very odd, very bad, & unusable.