Excalibur Food Dehydrator

I bought this dehydrator because it was the #1 choice of America's Test Kitchen. What a mistake! I'm trying to dry three trays of cherry tomatoes - tiny little things that I put in 9 (!!!) hours ago! They're still not done. The booklet that came with the machine says to dry tomatoes at 125F for 5-9 hours. I started at 125F, bumped it up to 135F a few hours later, and have had the machine on max temperature (165F) for three hours now, and those itty bitty tomatoes are still not done. It's not even humid today. It's much more effective to do them in the oven. A few days ago I followed a recipe online to dry cherry tomatoes at 250 in the oven, and it took five hours. They turned out perfect. But I didn't want to tie up my oven for that long on a warm summer's day. It seems like now I'll be up all night listening to this machine whir another 9 hours in my kitchen... unless I want to transfer all of my half-dried tomatoes to baking sheets and finish them in the oven. A waste of almost 300 bucks. So annoyed! ETA: the trays are all lightweight plastic. Not metal. For 300 bucks, one might expect light-weight metal trays and screens, but no. I've used this dehydrator for a few days now, and your best bet is to put food in first thing in the morning and let it go all day while you're home... unless you're the type to run a heating element in your house while you sleep, which I wouldn't do. Since I'm retired, I can put new batch of fruit and veg in every day to dry my produce and keep up with it, but if I were still working, I'd have lost a ton of food by now. This machine is impractical and disappointing.