Probably just a mixup in bagging the accessories at the factory.
looking good Dell; the mod to fit the OS GT 33 will be well worth it. I know the control horn issue is frustrating, but you are correct, you don't want to fly a plane this size on half a control horn...not a good plan My OS GT 33 in my 71 Slick is throwing that plane around the sky like a rag doll; can't wait to hear what you think when you get this thing airborne! (have patience, it took me a long time to get mine done, but it was worth it!)