Good morning! New to this forum. Looking for some advice. I have a 2015 mid 570, driving down the road and all of a sudden it sounded like marbles in my rear end and the unit stopped driving. Engine ran fine. Brought it home looked on youtube and it pointed me to the propeller shaft. started pulling it out last night but while I had it on stands, I moved the rear tires and the shaft turned fine. Is that my problem or do I need to look at something different? Any help/experience here would be greatly appreciated.