I managed to fit an oil filter and then fill the engine with oil - at least it didn't run straight out the bottom of the engine!
Finally, last action of the day was to try to remove that stud. Here it is, surrounded by it's well of blu-tack holding WD40 in place. Did this co-operate? What do you think!
A blow torch and mole grips wouldn't shift it so by using my Dremel we filed 2 flats onto it so that we could get a 6mm spanner on.
No, it wouldn't move then either! So, it's still there in another WD40 bath.
Let's see what tomorrow, the fourth and final full day on this will bring.