As with the other AMT kits in the White/Autocar/Western Star/Diamond Reo line - the cab fit/hood fit is tricky. I like the temporarily install the hood without the radiator in place - and align the cab - gluing it in place, then installing the radiator. If you follow the instructions and install the cab first, you'll fight with the fit and hingles. It's easier to adjust the cab than the hood.
Tim