Thanks for the heads up on the repairs.
I will mess around with the tractors more. It might be due to the fact that I make walled bases and my cow shed, factory, and meat shop are close to each other.
I have had good luck buying 5 manual tractors, loading the cows myself, and driving a tractor back with 4 AI, unloading, and grinding. It takes me away from commanding and the RTS portions but it works well. It really helps to have additional human players :)
@TIGGa How about ammo reloads for static defenses?