I have did just like most everyone here. I covered first, then removed what was not needed, just like on an ARF. I am building the Sig Hog Bipe now and it has a similar setup on the tail as the SSE. I plan to do it just like the SE, cover first, and then remove what you need to form a good gluing joint. It is really a matter of personal preference from what I have seen. Just as many cover first then assemble as those that assemble and then cover. I just find it easier to handle the different parts if they aren't attached to the plane.