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Product Description
For the 11-103 and 11-104
Turn the original N Gauge coupling 90 degrees towards the bottom and it will pop out and the coupling pocket should unclip. The tiny spring will probably fly out but this will not be needed.
Cut the coupling from the sprue and fit it into the pocket and clip back into position. It is possible you might need to file the end of the coupling to get a good fit.
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