Unfortunately Tundra does not currently adjust their stock levels on their end whenever they receive an order. Therefore we'll need to wait on them to implement this functionality which they plan to do soon. In the meantime, you'll need to adjust stock levels on Tundra yourself whenever you receive an order and we can pick up on that and sync it.

Note that syncing stock levels from your other sales channels to Tundra is not affected and will still work.