I love Rokr products and have made many of these wooden puzzles. This one had 2 parts (not related to gearing or crank) that splintered/broke completely after I ran the full run. It's a shame to spend time creating such a wonderful marble walkway only to have parts of it broken off. I put together an original marble walkway from Rokr that is still working 2 years ago. Unfortunately, this new version is not of the same quality. If you want a great marble catwalk, just buy the original Rokr catwalk.
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