For some reason they all just pile onto one another.
Here is the code that loads the scene and then spawns them in.
extends Node
onready var dice = preload("res://dicePane-test.tscn")
func _ready():
$DiceRow.add_child(dice.instance())
$DiceRow.add_child(dice.instance())
$DiceRow.add_child(dice.instance())
$DiceRow.add_child(dice.instance())
$DiceRow.add_child(dice.instance())
Here are some screen shots of it all layed out and how it looks.

Also, is there a way to see while the game is running what the Node/Scene tree looks like? It'd be cool while adding things to the tree to be able to see those updates in real time.
Thanks in advance!