I'm with thw clean it seal it crowd. The Yamahe genrrator in my trailer leaked between th ecase halves. Took all the bolts out and pryed the case halves apart about 1/8". Cleaned the gasket out with an exacto blade. brkleen it a few time to make sue all the oil drained. Filled the gap with sealer and bolted it together. That was 5-6 years ago. Hasn't leaked a drop. I've sealed 440 pans with Ultra Grey rtv. no leaks.
Doug
Doug