Right then suffered a tragedy. . . got a muscle spasm and dropped my board right onto the corner of the screen breaking it.

After moping around for a couple of days and alternating between despair and rage I am getting back to it.
I have managed to get hold of another board (time to foam coat my work area while I await its arrival).
So should be having a second try come the weekend -changing boxes this time though to avoid some of the stupid mistakes I made for myself last time - going for a probe case with rounded edges but should work much better (and easier).