Why is player's Head stretched?

[LuaKyng]

I want to substitute player’s Head to a costum MeshPart. I already substituted it with the code bellow, but it’s stretched to sides and I don’t understand why.

Players.PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(char)
		local description = char.Humanoid:GetAppliedDescription()
		wait(2)
		print(description)
		description.Head = '8557570518'
		description.FaceAccessory = ''
		char.Humanoid:ApplyDescription(description)
	end)
end)

Here are some images of the unwanted result I get:

And here are some images of the actual Head MeshPart that I uploaded to Roblox

Solutions I tried so far:
I already tried to stretch the original part front and backwards

[LuaKyng]

Fixed! OriginalSize Value was cofigured incorrectly. I didn’t know Roblox get it to resize the MeshPart