Dave Freeman came to do the low-setting adjustments on the hob, and also to remove the two rusted kitchen window screws. He did them with an angle grinder, which prompted me to research and order a Dremel tool with metal cutting disks.
Window came out, so I cleaned out the screw holes with my M4 tap. No countersunk holes were apparent for fixing the wooden inner frame, so I'll have to create some.
Replaced the window with M4s to check how everything sits. Will leave it in place and covered with a tarpaulin while we are south for a week.
