With the scraps from our Chinese plywood and 2x4 framing failures, we built some sawhorses sized for the trailer walls.
The original walls were built with nearly all 1x2 framing.
We wanted a bit more wood in the rot prone sill boards, so we used 1x6 with an additional 1x4 above the wheel wells.
The rebuilt curb side wall
And we even found a festive use for the remaining Chinese junk plywood