Proper chocolate tempering temperatures

https://www.ghirardelli.com/tempering-chocolate

Trying 115, 81, 89

https://www.valrhona.com/en/l-ecole-valrhona/discover-l-ecole-valrhona/chocolate-terminology/tempering-chocolate 

https://www.seriouseats.com/the-food-lab-best-way-to-temper-chocolate

http://www.waynesthisandthat.com/tempering2.htm