Trying to get an order together for baileys , I need a chain for my old homelite super ez . Doesn't it seem crazy that this saw came with oregon 72D 3/8 chain.The ez is only a 40ccc saw !!! It seems weird that a 40cc saw came with 3/8 chain and the 346xp has .325 , is it because of the higher RPMS of the 346 ??? :