Have done lot's of corn in snow unfortunately. Some guys think that you don't make as many fines with the rotaries and fines with the wet snow is what starts the sieves to start plugging. My 88 will start forming a bridge at the concave towards the front on the right side from the rotor hitting crop and shooting snow to that side. If it is cold enough you can run all day and your machine will look like you hand buffed it inside because cold snow turn to sugar and it polishes. Your right about getting it out of the truck, furthermore watching to make sure snow doesn't plug the elevator at home when filling bin or drier is more crucial. Hope I helped out a little.