The 10 and 2 sound more correct. Both dots facing each other would be maximum retraction of the shoes. The shoes are likely wearing more at the top in that case.
Using the weight is interesting. Never seen that done before.
One more thing to consider is if there is a long lining shoe and a short lining shoe, and that they are in the correct positions according to the manual. That could lead to excessive wear on a shoe if it is in the wrong spot.
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