In a recent post I showed how a windshield could be improvised for an Optimus 111 silent burner. https://classiccampstoves.com/threads/26614 Today I used the same type of windshield on my Radius No.7 stove, fitted with a regulated silent burner. This is one of my favourite "user" stoves as it is so controllable. However silent burners can be susceptible to draughts and cross winds and a windshields is required. Best Regards, Kerophile.
I must have had a hard day but I initially read that it was an impoverished windscreen, George and did a before the penny dropped. Very effective. John