I honestly don't see the need for this.
From a modeling perspective, it's doubtful that many would want to be able to remove the mast later and would therefore simply glue it in place.
From an historical perspective, it's just wrong. There was no evidence of a wedge to hold the mast in place. According to Dr. Bischoff's drawings of the keelson, the mast step socket appeared to have a square cross section which would have prevented the mast from rotating. The mast partner (the large hump that spans four frames), was slotted from the mast hole aft to allow the mast to be tilted back for maintenance. The mast partner cover sat loose over that slot. The mast was held tight against the front of the mast partner by the forestays, the deep socket in the keelson preventing the foot of the mast from popping out. No wedges were ever used.
Additionally, (sorry JBB, I know you've already made your mast) the forward face of the mast was left flat. In other words, when the square beam was turned first into an octagon, then rounded off, the forward 1/8th face was left flat, for additional strength it is assumed. Unfortunately, we don't know if, or how far up this flat was preserved, since the top half of the original mast had rotted away.
