Reason I ask is twice now I have have some models rejected and I am not confident yet that I have understood what the 'remaining shells' is about. I think I have worked it out but how can I get a check carried out on these models. I just wish my order was placed on hold instead of the coupon as I still want what I ordered even if I have to make these minor but really infuriating corrections.. The models concerned have been re-uploaded into my designs Federation Abbe (remaining shells) Klingon D7 (walls was too thin) Klingon L9 (remaining shells)