From what I can gather, with a York county style screwtip, where the threads are external, it shouldn't be a problem using a rod of some sort to bend over the staples. On the other hand, I would think using a rod to bend the staples on internal threads one would have to take care not to ruin the threads. Or, in this particular style they didn't bother to have them go all the way through the horn?
I remember reading somewhere that to install the staples in the neck area one should use a drill bit slightly undersized taking care not to go all the way through the horn and then hammer home the staples. Either way interesting conversation. I want to thank all that have participated. The information, as always, is well received.
Gary