Hi all 9520 is getting hot under Load, in 30°c air temps I can’t travel a mile without coolant temp alarm going off. As soon as I lift out to turn it drops a few points and alarm goes off. If I stop for 30 seconds it cools till needle sits at 12:00 I’ve stopped and cleaned radiator out twice that’s not helping. I suspect viscous fan is an issue as heading into breeze it runs marginally cooler and on cold morning it will run a gear higher without getting hot. Also viscous fan seems to have more resistance cold than hot. Is there anything else I should check for?