I'm almost done with the baffles on my line arrays. However since I'm using soft wood, and trying to get very close spacing, so I have a crack between two of the holes. One on each baffle. I would just fill it with polyurethane glue, or wood glue and sand it flush, but I'm going to stain the baffle. Would filling it with stainable wood filler do the trick? And will it last? I know i'm not going to get perfection, i'll be happy if it is just not terribly noticable.