Yeah, power outages and 3D printers are a huge bummer, It has happened here 2 times to me…..While running 6 printers. Instantly loose at least 20hours if not way more.
Bolt heads aren’t the issue. Hopefully you just had the wrong nut lock. If not, double check to see if all your files are from the same version. A few times people have printed a few IE parts for the US version.