I'm not familiar with you year, but do the wood planks require an special edge that goes under the metal strip that connects the edge of the boards? I had to create that edge so the metal strip sat properly on my 1940 Chevy PU.

I used a penetration epoxy covered with a UV protector and worked fine. Just pay attention to the ends... It soaks up a lot if it's dry..

I also found that assembling the bed before I finished the planks saved a lot of Hassel when they didn't fit as I thought they would and I had to modify them, screwing up my finish and the seal.

Mike

1940 Chevy 1/2 Ton presently... Almost done
1940 Chevy Business Coupe... In pieces