Shan't do the cutting myself so far as possible this time as I want a more accurate joint than is achievable with a hand-tool, and am lucky there's an engineering workshop just a mile away of the sort that are invaluable on the one hand, and rapidly disappearing on the other.
So it's out with the old today in the form of team-member Martin Andrews whom I have advised in writing as of now, and in with the new in the shape of the third flying prototype.
Third time lucky?