Annual 2020 - Inked Dungeons question

I recently started working with Annual 2020 "Inked Dungeons" hoping to generate an OSR style map. I've run into an issue with the floor fill and hoping for some guidance (see attached sample).
1. The floor fill leaves half squares along the walls, making it look like the walls were mapped along the middle of the grid/graph paper; usually in a hand-drawn map on graph paper, the walls would be drawn on the outside of the squares, not mid-square.
I'm wondering if this is a limitation of the floor fill, and there's no way to get the inked squares to line up with the walls and corridors instead of half-squares.
2. The second question - if I didn't use the floor fill, is there a different way to display a full grid in the finished drawing? (Again, so players would be able to make a map on graph paper). So far I've only seen the options for various grid dots in the drawing interface, and wasn't sure if there's a way to display a complete grid in the finished map.
Apologies if these are really basic questions - I'm a hobbyist map maker (on a good day) and haven't done much with DD3 before.
Comments
I think this is a deliberate artistic choice in this style, but you can change it by "cheating" a little. The origin of the fill is determined by the lower left extent of the fill, so if you make a little notch somewhere that forces the start of the fill half a grid square down and to the left, you get your desired result. This little notch can then be covered up by the outside wall details:
As for the second question, you add grids to your map using the Hex or Square Overlay command found in the Draw menu.
Some of the lines go all the way and some do not.
If you have the OSR dungeon style, it should have the look you want without the line issue so you might want to try that.
Thanks for the ideas, folks. I was able to get the floor lines to line up with Monsen's idea of off-setting them - see attached, problem solved.