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Discovery #3 – The roast times were running long – about 20 minutes, so I drilled a hole in the UFO body to allow a digital thermometer probe to enter the chamber – just above the stir arms. I found that once the beans expanded, the probe actually sat in the bean mass.

Note: There are a few "Euro Strips" on the stir arms - many folks on CoffeeGeek forums use these on their Stir Crazy roasters. I plan to remove them, since others have mentioned that the UFO's stock stirring arms move the beans sufficiently on their own.