I'm a pretty astute handyman and normally don't follow instructions but did in this case, only to discover nearing the end that I couldn't drill the very bottom left and right holes because the arms are in the way...
Suggest a step be added in the instructions after step 3 as follows...
"Using one of the rivets provided, hang the table on the rivet into the hole just drilled holding the table firmly back on the van wall so that you can now mark the bottom left and right holes. Remove the table and drill these holes before proceeding to step 4"
- Darryl Nissen