Nice rack, who did you get it from?
Also here are a few suggestions, as I also use racks.
- Visit Home Depot/Lowes and get the reflective tape(holds up against heat)
- Instead of having the probe right there on the bottom where your tub slides it, put it on the side right before it curves. It will be out the way of the tub then.
I'm not sure what that little styrofoam thing is, but that's possibly meant to be removed as the tape is recessed into the wood so your tub doesn't hit it. This is why the probe should be on the side versus the bottom.