If your tstat is good, I would make sure you're bled properly. Feel the rad hoses to see if one is lagging in temperature and holding air.
Did you use your m20 temp sender? Maybe your gauge is reading low. Try using a digital thermometer gun and compare if you have one.
Did you use your m20 temp sender? Maybe your gauge is reading low. Try using a digital thermometer gun and compare if you have one.
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