Doesn't the agreement with STI include "white glove service"??
We ship pins all the time thru STI and other than occasional bent legs we don't have issues and they are fairly good about claims.
The key is to wrap it yourself and don't trust those idiots to do it. We have several delivery crews that come to our place and only one I trust who cares about us as customers and about our shipping pins [Rod]. They mostly hire the lowest forms of life to pickup and deliver and don't give 2 sh!ts about your multi-thousand dollar toys.
In short, wrap the sh!t out of it yourself before they get there for best results.