With the latest update adding Sandstone a few of us have found that old maps generated have the sandstone spawning in with only ~50 hits. I had a look through the code and found that it expects all cave tiles to have a random resource count, with rock and rocksalt tiles ignoring this resource count and using their own counter for when to break the wall.
I've quickly thrown together this jar to fix this resource count on anything, but it isn't perfect. It will set any cave tile that h