I replaced the elevation spacers with 41 total elevation spacers, from 1 to 40, with a half spacer for half levels. I did this because my previous method of stacking single spacers was rather resource heavy if you were using lots of elevation changes. In my test map, which was a rather standard battletech map I ended up with almost 18,000 pieces.

Included for convenience is all 41 different spacers in a single unit with multiple states. Note that the state numbers are off by one because the first state is the half level.