Might have to give it a shot, Woody!
RC, I usually use super glue on seams if they remain after assembly, but what I usually do is when gluing pieces together, I use the ol' squeeze trick where you just squeeze the parts together to get that little ooze of plastic (that is, if you're using solvent glue for assembly), and after it's completely dry, a quick swipe of the trusty X-Acto and a wipe with some light sandpaper is all ya need to take care of the seam.
As far as replacing detail, if I do destroy any panel lines or rivets, I just re-scribe or add the rivets that were lost.