I modified my boards when removed the slot system and welded in captive nuts on the underside of the board. I then used bolts with lock washers from the underside. I was able to have enough adjustment this way still. You can really crank on a 1/4” bolt compared to that slide system. I also applied anti seize to the threads.

Last edited by Fox; 02/07/2022 5:04 AM.

1970 Chevrolet C10
Grandpa's -- My first truck -- In progress to shiny
Follow the build in the Project Journal
1950 Chevrolet 1-Ton Dually
"Ole Red Girl"
In the Stovebolt Gallery
More pictures here
1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's
Parts trucks-
1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300