Replacement alternator fitted, it is big with the larger plastic cowl touching the block cooling hose - will monitor to see how that goes, may need to put an elbow in there.
Question, cylinder 1 on the 910 has the ,marking '10' on older engines this used to signify over sized pistons following re-bore, is this likely or just MB quirk?
Inspected the band mentioned earlier, this looks like the steam tackling the carbon build up turning it grey, there's also small parts where it has managed to expose the cylinder underneath.
Made a small glow plug reamer tool which worked well, unusually the 962 had one stuck plug (2nd from back) which was very sooty -
It will be interesting to see if the w-i keeps the carbon at bay helping ease future glow plug removal.