DannyG
TVWBB Pro
Just math, measure the width of all 6 slats, subtract from Z-metal length, then divide by 5 if you want flush. Then take your calipers and find something to use for spacers.
3/8" nuts measured 0.323 which is just over 5/16 and worked for me. For Bottom tables I added (2) pennies to the 3/8" got me around the 7/16". I had a bag of change I was taking to Coinstar, and grabbed a couple of pennies which were just under 1/16" + 3/8 hex nuts was my 7/16
Bolt Depot shows 1/2-13 nuts to be 7/16" thick.
As you mentioned the goal is just to keep the spacing uniform, so depending on your slat width adjust the spacer.
So maybe I just glue pennies together for spacers aahaha
1/16 per penny, got it !