There should be no need for side (lateral) stress on the ally rad top bracket. The supporting tie bar is adjustable in this plane using the inner nuts onto inner wheel valances that support it, locked with outer nuts within wheel arch.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone