I've read many threads and seen many pictures but I'm not finding the information I need. I inherited a Parker 271, which seems to be nearly identical to the 272. I'm missing the tapered pin for locking the swivel jaw. Does anyone have one that they could provide some measurements from? Ideally, I'd like to know the length of the tapered portion, along with the diameter of the widest and narrowest ends. I would like to see if I can get one machined to look similar to the original. Thanks for any help with this.