Guys, the driver issue is pretty easy to fix. If you don't want them "in sync", just remote the single screw holding the articulated power truck on, slide it forward and rotate the drive shaft link to a new position, slide it back together and put the single screw back in.
The sounds only Lionel can fix, and obviously they're going to do just that for folks that send them back in. Sure, it would have been nice if they were fixed when they had them all apart, but that ship has sailed. At least they are going to make it right.
