I just purchased a new Bachmann Doodlebug. I understand the gears on the axles split. Even though this is a new unit should I plan on replacing the gears or do they run for a while and then split? Only paid $35 so I have some $ for repairs. I see NWSL has replacement gears part #2307-6 and wheel sets part #2588-6. I’ll put up a photo in the recent purchases thread when it comes in. Happy Sunday to every. Hope all are well.