The Mulfab ones, still I believe, just weld the upper radiator support bracket to tank in a simple semi-circle. This may be adequate but in John's case the neat stack of diamonds weld only penetrated the tank for 20% of its length such that over time the localised stress ripped out the side of the tank.

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Compare to my SiFab one (no longer available) where the similar mount bracket is welded to tank in an "M" pattern to spread the load.

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Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone