I wish every one took that great of care when shipping. Especially carburators !!! I have received two carbs this year that were damaged in shipping due to poor packing.
That shipper did a great job !!
I don't know if the carbs you bought was from a individual or a company but you could tell the individual to take it to UPS, or Fedex. Let them do the packaging on your dime and buy the insurance to cover it if lost or damaged. Thats what I do and have great success with it. It beats receiving damage goods even though it costs a little more. I learned my lesson with stainless trim that I bought from a individual that was damaged in shipment. It looked like a one armed man had packaged it.