Bought this boat at the end of last season. Only had a few outings last season. Didnt notice any unusual noises last year. First weekend out this weekend and noticed a knocking noise at idle. Didnt have alot of time to investigate since boat ramp was busy. Read about some people have issues with wakeplate rattling at idle? Any other ideas of what it maybe? Is there anyway to post a video which I took where you can hear the knocking, rattling, pinging noise? Engine is still under warranty but hopefully it's not a major issue.