I just bought a used Mad River Lamoille. The canoe is in excellent shape, but the wood needs refinished. The wood is teak. The guy told me he just sanded it down in the past and used teak oil. I planned on doing the same, as I understand it varnish is not to be used on teak, correct? My primary question deals with where the wood is glued together. Along the gunwales there are two strips of wood that run from bow to stern. One inner strip and one outter strip, four or five screws hold them together at the bow and stern and the rest is glued. I noticed the glue seam is cracking along part of the length of the seam. Should I remove the outter strip of wood, sand down the old glue and reglue that seam? Or will it not hurt much if water gets inside that seam during use this summer? I can post pictures if it helps.