A bit of a Duh moment for me, most likely. FT can save tiled map images. I've never really used those before, so I'm exporting a batch now to play with. Assuming they come out with better resolution, they may solve some of the resolution errors. However, that doesn't change the resolution of the data in the FT file itself. I will have to see how it turns out. If the results are acceptable, you can also define views in FT and export those.