This is a novice builders question... Do you build up in the bones all the way and then remove everything again to cover? I have recovered a few planes and its always a pain once the tail feathers are already on. Like I said I have built a ton of ARF's and a few kits. This seems to be the case with most planes I have seen. I guess in this way it gives you a much better way to see what will or wont work. Perhaps more control over all the small details which make the plane fly better.