I have 6 Lee pouring pots, 2 small 4 large that we use in our hand pour operation. Everyone of them the temperature is different. You will find the lower the plastic gets in the pot, the hotter it gets. After a year of trial and error and no matter how low you set the temperature, I was still burning plastic. One day while shopping at Lowe's, I discovered a dimmer switch for a lamp. You plug the dimmer switch into your outlet and then plug the pouring pot into the dimmer switch. This gives you a whole lot more temperature control. I don't use an automatic stirrer, I just stir regularly with a butter knife while I am pouring. This helps me to keep a closer eye on the plastic. I use LC 536. When your plastic is coming out of the spout, if it is smoking, then you are getting close to burning and most likely you are going to have a color change. Remember each pot is different. I've got one that you have to set on 5 to heat it up, 3/4 of the way through I have to turn the temperature completely down and adjust the dimmer switch. I have another one that I only have to turn the pot up to 4 but halfway through I have to turn the heat down. I think you will find this true with most Lee pots and remember if you are adding salt, it tends to heat up faster and hold heat longer, so you really have to pay attention here. We've used them for years. Just be patient, learn your adjustments and write them down so you will remember what you have done.