Good evening,
That's what I thought, see attached photos
Voici comment devrait être le mantelet ?

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continued assembly in order

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Personally, here is what I did for my Panther

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Sorry for the size of the photos

Too bad the mantle has been modified? it's Zamac, difficult to drill (except with good forest) to tap, and also to stick? or redo an identical piece in 3 D.