I would think the only issues the Brightline cars, both those "on the property" and stored awaiting service resumption, as well as those on order, are these lead pipes that have caused delays with deliveries and inauguration with the several Local agencies that have ordered them.
All I know is that based upon rides on OBB (Austria), and my eight Brightline joyrides, that these cars are impeccable equipment. It appears that the North American varietals are derived from the European "stock". Such cars "over there" are also in service with CD (Czech) and DB (German) systems.
Now so far as the lead pipes, no first hand experience; all I've had to drink on any of them is wine.