A few questions for anyone who has done these. Hosel bore is only between 1″-1 1/8″. That seems short. Does this mean there is a weight plug in the hosel? Almost every hosel, at the base, has a number stamped – 5,7, or 13. What is this? And each shaft, when I pull it, has a blue plug at the tip. What is this? Finally, each head is a little heavier than normal, but almost all are 7g. heavier than the previous one. Does TM fiddle with the heads somehow with weight plugs to get the head weights to where they want them? A lot of questions, but issues I have not seen before. I wrote TM but have not heard back.  Thanks