Hi, I recently came upon an old Op.111 case from which I had removed the tank and burner several years ago for another project. The case was distorted, was missing its closure "catch", and was very rusty. A good stove friend provided a tank and silent burner so the project could begin. I fitted a new regulator/cleaning assembly and renewed all seals and washers of the burner and tank. I straightened the case, removed all the residual paint with paint stripper and removed the rust and passivated the steel using phosphoroic acid. I painted the case British Racing Green, using heat proof engine block paint: I do not have access to a spot welder, so re-attached the spring closure catch by drilling a hole and using a stainless steel button-head bolt and lock-nut. It works well. It sometimes happens that the hinges or closure catches become detached from Op.111 type stoves. I believe that this type of fastening offers an easy repair, whilst still looking neat. Best Regards, Kerophile.