The way I do it is I set my drawing grid to .05" x .05" and then make sure all of my tables are a multiple of .05" wide/tall. This way they'll always behave properly.
Or you can just zoom way in and place them by eye. As a perfectionist I used to abhor this, wanting them to be perfect, but in reality you can get them way closer than the width of a printed line, visually the hard copy is perfect. I stopped sweating insignificant details like this years ago.