Grid's and linear features not intersecting

Hi there,

I'm trying to get grid locations from a polygon fgdb feature class attribute for the start and end of a fgdb line feature class. The attribute I need to put into the line data is a GRID ID (shown below). I've created two different scripts that seem to work, although all the writers have null values in both GRID_ID columns. I've attached a screenshot of the data in arc, and my workspace. In the second attempt of the workspace, the clipper doesn't output any features inside it.