I agree, that's the step I hate doing the most. That's why when I do use it, I usually grind a 10 pound bag of chicken leg quarters for the pups. Or grind enough for a keep, weigh it and store it in freezer.
Not sure if they still sell it there. I bought it about 4-5 years ago for a good deal. The accessories in the bag($49.99) was for free when I bought the grinder.