I use the round dehydrator (American Harvester) too, and it works just fine. I solve the getting-food-off-the-trays problem by removing it into a large bowl and then scooping it into freezer bags (which allows me to measure servings at the same time).

Watch out for those peas! When I tried dehydrating frozen peas, they were still the consistency of buckshot after 15 minutes of cooking! I buy freeze-dried peas and corn from Just Tomatoes or Packit Gourmet--they are less expensive bought in bulk. Restorative dentistry for broken teeth is a lot more expensive! Be sure to try rehydrating the dehydrated peas at home before you dehydrate any more.