I have changed out a couple of elements since I first got this controller. I started using an element from brew hardware but ended up burning that one up. Then I started using a store bought 240 4500 w element but found I got a lot of scorching. I finally replaced my rims element with another 120 v 1500 W from brew hardware. I ran the auto tune and found I could hold a mash temp within reason but could not get to 168 for a mash out. Went through the menu today and found the pid settings were WAY off the default - like 9999 vs 30 default. Has anyone identified optimal settings for control period, proportional band, intergral time and derivative time? Not sure if I had still had old (bad) settings from a previous autotune.