I just had a thought. It has been really humid here recently due to all the rain we've had. On top of that, the houses here are equipped with swamp coolers, which means the house is loaded with moisture, so much so that the door frames expand (contract). My building area is downstairs in the basement, but that doens't keep the humidity entirely out of the air.

Does anyone think that excess moisture will affect the balsa and potentially cause warping of the structure when it is finished and dries out?