I think the bolts are supposed to hold the foot in place and the sides of the connection counter the bending. But maybe above a certain strength the bolts snap. Afs, KT and Duotone did a beefed up version of that with M8 screws that work great (although I have not seen duotone in person). In depth post there Mast foot standard, industry standard interfaces - #93 by KDW
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