i defretted a neck, and filled the slots with wood veneer and titebond. but after sanding, some of the veneers look like they have split, or have been dented or torn in the slot. this makes for some small dents and cracks that i want to fill once and for all. i want to avoid using superglue to fill, since i did that on a few and it stained the rosewood. i'm not looking for a hard epoxy type thing either, i want the board to be kept natural. can anyone recommend something?