I have written to Anova to find out what they think/want-to-do about the incompatibility of the probe and the pan on the top rack of the oven. Will let you know. (The perforated pan does not look like it would work any better than the upgraded pan, and, now that I have the items below, I'm unlikely to purchase).
Here is my APO set up to dry strawberries. See Dehydrating foodstuffs with the Anova Precision Oven.
These items were recommendations from @palo and @JoNorvelleWalker.
The rack is from Hamilton Housewares (12" x 17") (eG-friendly Amazon.com link)
Silpat Silpain Premium Non-Stick Silicone Baking Mat for Bread, 11-5/8 x 16-1/2 (eG-friendly Amazon.com link). Jo uses this mat to bake bread Nope!