[RM2K3] I HAVE A MAPPING ERROR I CAN'T FIGURE OUT.

Okay, I've got an issue with tiles messing up in test play. Here's what the map is supposed to look like:



Here's what it ends up looking like on test play:



And here are some arrows pointing to it in case you can't spot it (all of the colors are similar and kind of blend together. Some people might miss it.):



I should note that I have this problem nowhere else on the map, and that while this is only spot that I make the wall slope against a shift + mapped wall, the slopes are made on the second layer tab. I don't even see how shift + mapping could affect them. If that's the problem, let me know. Otherwise, I don't know what could possibly be causing this.

Thank you. Neither worked, so I've changed the map. Nothing was working, so I went ahead and added a manor to the top, so instead of a ruined castle, it's occupied. Since that was the tower portion, it's now hidden.

So, no using upper-level tiles on roof tiles. :/ Thank you. Now I know how to fix it if I decide to change it back.