I have a m4-30 Universal. It needs a rebuild. I'm looking for a rebuild kit or a way to find where I can get parts through Kabota. When I call them they had no idea what type of kabota it is. I know it's a v-850 block they said it was never sold in the U. S. so no parts available. To piece it out through a marine dealer. Several thousands, so a rebuild kit would be cheaper, any suggestions?