The game we managed to undo your guys was largely in part due to how nullified Morgan was. Gallagher managed to absolutely take him out the game and used his strength to stop him doing anything. Compare that to the game where you went down a man and won, Morgan destroyed Longridge and won that on his own.
In saying that, I don't think Morgan needs to bulk up at all. Seems to be in a good place, just keep plugging away with his technical skills