This is really starting to annoy me. I have a few sectors that are supposed to form a river. They dont line up to the grid at all, and are completely randomly cleaved. Every so often all the adjoins will mess up and the checker says that the adjoin surfaces dont overlap, even though I just created them and they overlapped a second ago. Is this due to my random cleaving? Should I re-cleave and snap the edges to the grid?

I assume my random cleaves are creating edges that lie at irrational grid points which succomb to some kind of truncation error when I save the file. Is this my problem?

snap together and re texture I say.

if(getThingFlags(source) & 0x8){
  do her}
elseif(getThingFlags(source) & 0x4){
  do other babe}
else{
  do a dude}

This would be my guess as well.