Would you drill them to fit to the wishbone just like plastic mudguards?
The PDW is very thin, least the 35mm one I know of, I'd be wary drilling a thin piece of alu.
They will break if you don't have says, a washer and/or the stay putting stress in bending the mudguard where it doesn't want to bend.
@edscoble started
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Would you drill them to fit to the wishbone just like plastic mudguards?