As far as I know, it was done that way on the assembly of all of the early 86's / 107's, I think they where all the same until about 1957 with the introduction of the 88" and 109".
Have a look at a bonnet of a later assembled Series 1 , the pad are placed in a way to share equal load of the wheels weight.
https://www.aulro.com/afvb/images/im...013/02/533.jpg
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