We know that the springs need to be a lot stronger than what the rack will actually lift. There are TWO springs, so the total force is 80 pounds, and the rack is rated to lift 40. It's certainly possible that they gave you the right information. I bet it's also possible that you talked to some dummy who knows absolutely nothing about this stuff, and the 40-pound rating was stuck in their head, as you suggest.
EZ-Dock modular docks
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