Was the space(thickness) of the deck filled with the balsa core fairly uniform, or did it require various thicknesses of whatever wood filler was used. I haven't skinned her yet, and am trying to do a liitle planning ahead. I agree, I am tending to steer away from balsa, and am looking at other wood and/or just glassing it or filling with some epoxy filler. Anybody see any problems with either method?