Mike, there is a learning exercise that some of us picked up from Chang, and which some of us found very helpful.
See if you can get your roaster to dwell with your BT, ET and MET all running horizontally across your Artisan screen. If you don't have an MET probe, just get BT and ET to be cruising at exactly the same differential.
Once you have your heat and fan settings so that the temperature is stable....not rising or falling....for a few minutes, then make subtle adjustments to one thing at a time and observe what happens to your graph. Heat up. Heat down. Fan up. Fan down. Only change one thing at a time.
And if this sounds like preaching or teaching when none was requested, I apologize.