The engine was lifted out today. Taking the Perspex off the top of the dog house revealed that the bottom edge of the opening is partly rusted away. That adds to the view that the doghouse will have to go in the long term. For this year a blast with the grinder to get back to solid metal and then fitting a wooden fame should be sufficient.
The engine looks better now it’s out
The floor beneath is pretty mucky. A priority will be to clean that up and get it painted before the engine has to go back in.