I suppose it doesn't really make a difference for your modeling, but the left shoulder actually applies to both sides. The big shoulder bell is really just a cap on top of the smaller shoulder piece. You probably already knew, but just thought I'd mention it since it was absent from the preview. Great work so far!
@Soulless
I've been tempted to make the switch too, but I've already invested so much time and money into the Mark VI (which is still an awesome design, btw), that I should really finish it before starting another.