1. If build limit gets tight, use the console command "Getav 34a" on a item and get its draw value. 2. Changing the scale of an item may cause pathing issues. 3. Changing the angle of an item may cause pathing issues. 4. When turning an items physics off, do not expect it to stay off when SS imports it. 5. Changing the scale of an item does not appear to change draws values of it. 6. Plots that you remove for a higher level, do not stay removed. 7. Make sure you check that the stool is facing the table. 8. Foundations scaled past 500% will cause a CTD 9. Building progressive instead of regressive feels more natural 10. Pay damn close attention to the file name when saving a level using the console. Anyone else want to share?