Piney, yes it would be good to check the actual temp in your system. My gauge is not accurate either but I know where the Needle sits when everything is normal ;-)
I assume that all Air is bled out of your system? I found that if leaving the Car Nose UP for a while (engine off) it helps to get it all out.
My Pantera never overheats and the Aux Fan typically comes on momentarily when at idle in Traffic.
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