Sea-Doo Spark Trixx Overheating

I have a 2021 Sea-Doo Spark Trixx and while riding yesterday going 30+ I lost most of the power and then the overheat alarm went off. After getting it out of the water I found that some small diameter rope (Paracord) was wrapped around the drive shaft. After removing it I did a water test and it quickly set off the overheat alarm again. I have now removed the upper deck and inspected the rear assembly and without taking it apart do not see anything unusual. Both water lines going into the manifold are clear. The coolant tank is filled to the correct about.

I am at a loss as to what to check next.

Thanks for any insight

Gordon