Ok guys i have ran this motor only 2 times this yr and dad bought the boat in flordia over the winter. I found out that either my pick up is plugged or have bad impeller. Today i was looking over the motor and found a crack in the case where the prop is. I can't say for sure if it was there before or not when dad bought the boat. What could have caused it? Now question is the lower end needs to be dropped to fix the impeller. So can the crack just be tig welded, I can do this at work and clean it up real well, I need some insight on this. I want to pick up a 9.9 for it this winter. the 20 hp with bad impeller and crack is a strong running motor. Here is a pic!