The rear rubber drag flap on my 5 month old Ego mower just snapped off on one side. The flap is only held by one small screw on either side- a very flimsy design to say the least. Is this covered under warranty, and how would I go about getting it fixed. If I were to do this myself, it looks as though the rear wheels have to be removed in order to get to where the the flap is mounted. How do you remove the wheels.