anchored objects in table

I work with a table-heavy handout that I need lines going across multiple cells. I have to add and subtract rows month after month, so I'm constantly shifting the cells. If my line is shorter, I can anchor it in the cell and it will span the length. However, if I have a longer line, it becomes overset in that cell and I can't figure out why.

Here are some of things I've tried:

• Changing the inset spacing of the cell

• Changing the height of the cell.

• Changing the alignment of the cell

• Changing the paragraph indent

• Changing the to a graphic cell and pasting a vector object or image (with & without "contents clipped to cell" checked)

Changing the width of the cell will make it appear but that is not a solution for me since I need every column the same width. I also cannot merge the cells as i need a stroke on the border to differentiate them.

Screenshot attached. I'm only showing three rows here but i have rows on rows on rows. Probably 200 rows over three different tables.

I desperately want all the lines anchored. Please help!