Has this happened with you guys' ATVs too? My power cord was near-impossible to plug in to the rear of the ATV, and required a lot of jamming until it finally popped in. Now, it looks like there are some scratches on the 3 power prongs on the back of the unit. Is my unit defective, or should I not worry about this? I've heard people complain about Time Capsule's power cord in a similar way before.