Originally Posted by Bugman Jeff
I stand corrected about the tubes. Stainless seems like an odd choice though.
As for your fitment issue, you might be able to use the back of a spoon to compress the foam and get rid of the step. EPO foam is pretty good about staying put after it's been compressed into shape.
That might not be a bad idea, but after looking at the photos a second time, I now see the biggest problem is the airfoil 'angle of attach' is not the same between the two wing halves. So I'll eventually remove the plywood and install a thinner replacement to correct the factory defect.