Good job Andrew.
It is a nice piece indeed...but like you said, unfortunately some (mine included) had a crown that strips easily. Mine didn't turn very many turns at all, and the crown was a bit loose on the stem. These flaws can be readily remedied by a replacement with an original crown and tube.
This has been discussed in other threads, but to those who are new to this, the gen tube does not fit as snugly as the rep tube (which is press fit)...and needs to be glued into the case after drilling out the old rep tube. The glue used by various members includes epoxy and Gorilla glue.
The parts for this mod are:
For Case Number 178.0514 made in Codes "ST" Stainless Steel, "DA" Steel & 18KT Gold, "SU" Steel & Aluminium Ring
Crown: 42154
Tube: 090 ST 1237