On the larger jig, the alignment hole is plenty big, shouldn't be an issue. I'm still trying to figure out how you broke the thing mounting it to the router...debris between the router lange and the jig? What the hell are you guys torquing screws with that you are snapping the heads off? You just need to snug them up, not crank them tight. You'll get a much better alignment with them just snug, less likely to deform the jig and les likely to break it...Don't ever plan on working at a machine shop...