OK, heres my ? A friend and I have the same model boat and motor, 09 Z520 w/hpdi 250. He blew his powerhead on #2 cylinder a couple of weeks ago. He picked his boat up yesterday and said the mechanic told him that is typical on that motor, its not if its when its gonna happenIs there anything to this? (his was still under warranty, mine just ran out!!!! Any input would be appreciated, Thanks