All my favorite rocket builds have been kits that come with pre-slotted body tubes and through the wall fin construction. My first build of this type was an Estes Argent and I thought “hey this is great!” My question is why don’t smaller rocket kits ever use through the wall fins? I realize they aren’t “necessary” in many applications but I still would prefer if given the choice. For example Apogee just announced their new MPR “Quick Draw’” kit but without a pre-slotted body tube and through the wall fins I am just not interested….