So what VIN number did u use wnen you ordered them?, there a two stays available and depending on VIN as u have now found out.
Assume u have a 300 series D1 with VIN from KA 038265 the part number of the staysu require is BTR6172, no doubt obsolete by now, so your left with Britpart with what u have with the additional hole.
Not difficult to modify, if you can’t be bothered to send them back.