Has anyone out there in vacuum land replaced their prop shaft bearing? We have a Yanmar YSM 12 up in the bow with a short shaft to the prop bearing and then another shaft back to the stuffing box. The prop shaft bearing is attached to the bulkead near the head/shower. It is starting to make a ballsy rumbly sound that doesn't go away with more grease pumped in. I'm thinking about replacing it and wondering if anyone out there has any experience with finding a replacement.Cheers, Andrew.