I have had my Rover for over two years now and it has been trouble free for 3,400 miles. Over the last 800 miles or so the motor has started to make noise, kind of a resonate whoop whoop whoop that changes frequency with speed.  Recently it has become much worse where I can feel it in the pedals and sounds like a rock crusher.  The planetary gears are failing fast.  I have seen several YouTube videos on how to open the motor to change or service it.  When i opened my motor the planetary gear assembly and the mounting plate is pressed tight to the motor pinion gear.  I can see the gears are wearing real bad but do not know how to pull them off the motor ?