Long story guys but wont get into that. I got an 18hp evenrude that didnt run, got it firing and running but noticed it has a 2" split in the lower unit looks like it might have frozen before. Put it in forward and it did fine. Question: how do I seal that split so water dosnt get in the foot? Its above the water intake towards front of motor. Would JB weld work? Any and all ideas welcome, thanks in advance.