Hello gang. I recently acquired a Martin S-O that has become quite dear to me. I just changed to strings for the first time since owning it and I noticed the 4th string slot at the bridge is not spaced evenly to the others - it has a larger space. Also, less important is the 1st string slot is a bit rough and slightly widened out to the point where the string knot needs to be pretty large to prevent the string from popping through. I assume the bridge could be replaced by a luthier, correct? If so, has anyone done this before and what the approx cost might be? I'm sure this could be a minor thing, but sometimes OCD takes over. Thanks!