Are Cannondale rack mounts unthreaded? I had to tap both the m5's (didn't go well) in the rear and the front has the braze-ons for the lowrider racks but I see no threads. Is this how Cannondale made these? Should I run a pilot drill thru the braze-ons and use an m6 tap? For anyone else who is interested if you try to tap with a quick release chuck in an impact drill it will wobble too much and you will ruin your m5 tapped hole in your frame. You will then have to drill and tap it the correct way to the next size tapped hole. I did this before I realized that there was too much slop in the quick release type chuck. I now have a rack with an m6 on one side and an m5 on the other.
Did they really make them like this?