Unless they changed the structure of the roof in the last couple of years it is rated to hold 1000 pounds of wet snow in the up position. That is about 3-4 inches of wet snow.
We never told anybody while I owned the company that you could put 2000 pounds on the roof.
Ben
my fault, you're right, it's 1000 lbs, don't know why I thought it was 2000 lbs, sorry for the mistake.