Thanks for the reply, Gordon. But running the build footprints tool (and accepting all the defaults) mungs up the footprints.
[ATTACH=CONFIG]19653[/ATTACH]
I've tried this with another set of rasters - smaller set, lower resolution, and no overlapping rasters - and those footprints get munged up as well. I tried reducing the number of vertices, and that helps but does not eliminate the problem. I did not change the defaults otherwise.
[ATTACH=CONFIG]19654[/ATTACH]
There's another problem I'm having with that second dataset, which Ill probably just write into another post.