Soldato
If you want your boiler to run efficiently it should be lower temp (allows it to condense).Yeah will leave on Auto for now see how it goes.
Unsure if I should change the temp of the radiators on the boiler think its around 70 at the moment, but some radiators are very hot to the touch, especially the ones without thermostat valves.
I believe 55 deg is the reccomended (mine has an eco identification on dial).