Well, from what I know of this issue -- margins and misalignment that is, Epson is only partially to blame, if at all. As operating systems have become more "advanced", and I use the term loosely, they have tried to incorporate a "one size fits all" mentality to nearly every aspect of personal computing, including sending information to a printer.
In my original post, I failed to mention I was using a Mac, and, while Apple does ship its operating system with a standard set of Epson print drivers, it also includes open source print capabilities that have seemed to override the manufacturer (Epson) print drivers--and this is an issue that goes back a few versions, like all the way to OSX 10.1!
It's a bit of a politics here with both Apple and Epson claiming their methods and tech are better than the other one. Ends up the consumer loses in the end.