I want to register my Pro5 sander and just wanted to ask for some clarification on when the warranty becomes effective / what date I should submit. Is it the date I placed an order (Oct. 4), the date it was shipped (Nov. 1), or the date it was delivered (Nov. 8 )? I would assume that it shouldn't be the purchase date since the tool was not even released until Nov. 1, but I just wanted to make sure.