Are you sure your thermostat is opening Rone ?
My water temp needle sits half way. Judging from what everyone is saying that the needle should be 1/4 , that means mine is also overheating. Except it doesn't rise, it just hoovers at midway.. even with no shroud and in traffic. I might look at installing a thermo fan switch and electric fan to keep the temp. at bay.
Oh I forgot to mention, mines a 5k motor.