I found that 95x120mm frame size will cause problem, bellows will be blocked by focus arm that connect to rangefinder mirror, so I will shrink the frame size to 90x120mm, avoid bellows blockage.
Since there is some distance from frame opening to negative, about 5mm, so the projected image will a little bit larger than 90x120, by calculating, it is about 93x125mm, not bad for a 4x5 negative.
Redesigning a new bellows is on its way.
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