This part's wire frame boundary is not correct, and as a result, the drawing views on the drawing are missing the area of the part that is not enclosed by the wire frame. Thus, when exporting to PDF, this missing area is chopped off.
Does anyone know how I'd fix this?
I uploaded the files: 1 assembly with 2 parts
The second part isn't resolved, does that have something to do with your issue?
Kevin
Both of the parts in the assembly have the same problem. When they are loaded as lightweight, they usually have this problem, and when I resolve them, the wire frame looks how it's supposed to. But this isn't always the case.
For example, I opened this assembly with both parts being in lightweight and having the wire frame issue. Then, I resolved the parts, which fixed the wireframe issue. Then, I set both parts to lightweight, and the wire frames remained accurate. 
It appears that the selected part is outlined. Why not post the files so we can check?