I have not yet tried any of the program modes. Did a 1:45 second preheat, then Used 1 (despite using only 1/4lb in the drum) to avoid the unattended shutdown nanny, then P5 for manual 100% power, then watched the roast. When it was getting brown I hit P4 for 75% power and listened for start of 1C. At start of 1C I hit the A button to reset the timer to show the expected time for 1/4lb to go to 2C. Half way through that time I hit Cool. I'm going to try a couple different things. Less power up front, maybe 50 or 75% and more at the end, 75 or 100% Then 100% up front like I did but cut back sooner, and maybe to P3 instead of P4.