Clean the threads with a wire brush and some WD40 and try again. Its stuck out more than 5mm isnt it? so even if its the wrong size it shouldn't be sticking out that much.
@DFP started
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Clean the threads with a wire brush and some WD40 and try again. Its stuck out more than 5mm isnt it? so even if its the wrong size it shouldn't be sticking out that much.