I am at the stage in my build where I am sanding the body and ready for grain filling in preparation for finish. The body is ash with a 1/4" spalted maple top, with a black accent veneer separating the two. Obviously the ash, being a porous wood, needs to be filled, and I plan on using the Timbermate filler, thinned and brushed on in as many steps as possible to fill the pores. Now where I am a bit confused is the spalted maple. Maple is not particularly porous but the spalted wood is spongy and will soak up a finish, so some kind of prep/filler will probably be necessary. -Does anyone have experience using Epoxy filler or CA glue as a filler/hardener for spalted woods? -If so, are there any particular brands or viscosities that I should use or stay away from? Are these any different from what I would get at Rockler for general woodworking use? -Is there any foreseeable problem with filling the back/sides of the instrument with one product, and the top laminate with another? -Should I apply some kind of sealer product to the top before squeegeeing CA glue across the top of it?