O.K. this is what I need help with. I have a 2002 470 that blew up a counter balancer bearing and I dont know exactly what was in there. Is this bearing suposed to have a circlip holding it in? Also the manual states that it should have a double bearing balancer, and it does not. Is this a 2001 engine? Can these engines be run without the balancer in them? HELP ME PLEASE!