The problem with shields such as yours is they further reduce ground clearance increasing likelihood of grounding. The solution I used was to fill the inverted U shaped cross member with a shaped hard nylon block attached with 6mm sunken bolts to same and sitting just a couple of millimetres proud of vulnerable edge's.

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Richard

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