Engine temps....
It's all over this forum to not use the TCW-3 oils.
The Seadoo requirements for the 2 cycle oil is a non NMMA, non TCW-3, low ash oil.
If you can't get the Seadoo oil, you can go to Wal Mart and get the Quicksilver blend of oil that is suitable for Seadoo's. Look on the back of the bottle, it'll tell you that you can use it. But before you decide which one is good for you, you have to know what kind of oil, synthetic or mineral.
Because you've been using the TCW oils, I"d use the mineral blend. You need to remove the oil and gas now and re-mix.
You say your engine feels hot. How hot? Does the exhaust system feel hot? What about the resonator, does it feel hot?
Your temperature sensor is set to alarm somewhere between 205* to 210*F. You can test it with a pot of boiling water and a cooking thermometer. You can test it with a continuity meter too.........which ever floats your boat.
Good luck......