Has anyone fettled a Rival spider to fit on a force crank? I naively expected to be able to swap between the two but the shape is slightly different so it clashes with the arm. Before I think about getting the dremel out I thought I’d see if anyone else had tried the same. Will everything be fine? Will I die in a cloud of aluminium splinters when I attempt to pull away at a roundabout?

Alternatively, does anyone have a 110bcd force spider in a box anywhere?