I'm messing around with the tools, trying to get used to them while I try to decide if I want to try my hand at DMing or not. I have digital copies of the official maps from the PotA campaign. The grid on the maps all look the same size, they measured out the same before I put them in roll20, but now I think they're not. I can make one square fit perfectly in the grid, but then none of the others do. When I adjust for another square, the first square is out of whack. I'm following the instructions here but I'm not sure if I placed the map down correctly to start with. I know the map is the size of a standard piece of paper when printed out. Does anyone have any advise to help me out?