Brought my plane back to the house shop for the winter. Temp was twenty two. A 
coat of ice over every surface. Canopy cover frozen solid to the surface.  The 
problem;  The foam seems to have shrunk every where on the tail and wing 
surfaces. Please note, I used blue and pink styrofam insulation thru out, with 
West system epoxy. Every wood spar is visibly outlined with the foam recessed 
as much as 1/32".  Tap testing today revealed NO voids. Glass adhered to foam 
and wood very well. It looks as if every wood part swelled, but that is not 
likely on the box wing spar. Must be the foam, right???

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