I would of thought the top/bottom and sides would of been one piece panels instead of two piece panels and thicker just and why would you put plastic bushings in a trailer when you have metal ones in a truck another let down for another expensive kit that keeps sucking your model funds that could of gone on another project they probably think no one will notice the cheap swap.
Anyway there is still alot of potential for this kit with a little make over

Keep us posted on the build ever step of the way
Cheers Tracy