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Some M3 screws in BNBSX Extruder are critical length. Although bunnies have adjusted design for standard metric screw lengths, these should be checked to verify their ends don't extend beyond associated nut.

Hot End Cover mounting screws must not protrude beyond rear of extruder body. B02M8 and newer use standard M3 x 30 mm. Older required custom 27 mm long.

Lower center extruder body mounting screw can protrude into plenum. This is especially problematic if wider, Mosquito hot end is installed.

Motor plate mounting screws protruding into motor bay impinge on motor body.

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