Steve,
I think what people are trying to say (and I was actually thinking this myself as I was putting them back together) is either smooth out all the lines, OR, build them right out to the glass lense. Here is a pic of a set of headlights from eBay. If you filled your out to the lense, it would look
similar to these (except of course, there would still be a glass lense over the entire housing:
