Hello everyone, <br />I am new to this board and new to boating so please be kind. I purchased a 1991 17.5" Dynasty w/ a 1991 135hp Mercury Black Max V6. This motor has been giving me problems from the start(about 20 days now. Purchased from a Marine). The first problem was a hesitation when I tried to pull someone wakeboarding or just get up and go(is this WOT??Not sure what that means), so I changed the H2O seperator and plugs. I'm 100% on the right replacement parts for this. This did not solve my problem, so I took it to the place that I got it from and they told me there was water in the gas. I got all the water out of the tank and the carbs. Soon after, a knocking noise started. Yesterday I was on the water and heard a loud bang, like I hit something, the boat came to a stop and died. I got the boat back to land and found a hole on the side of the lower block. I believe this was caused by a rod. I am wondering what could be the cause of this?? Could this be caused by the carbs not being adjusted correctly?? Is there anything that I could have done to make this happen? I am wondering due to the fact that I am going back to the place that I purchased the boat from tomorrow and am thinking they will try to get out of fixing it for me.<br />Thanks!!