For CJs shoes, how do you tell which last a specific shoe is in. On the shoes I have, I see the following set of numbers, 20392, 106, 10D, 1385-13363. Obviously 10D is the shoe size, so is 392, 106, or 363 the last #? And do you guys only use CJ shoe trees? The shoe is quite slim and narrows significantly around the toes. The Woodlore shoetrees (made by AE) I have are quite big for this pair of CJ shoes.