Thank you for sharing your feedback with us — we really appreciate you taking the time to describe your experience.
We’re glad to hear that overall you found the model good, but we’re truly sorry that unclear details in the instructions and the final gear and spring assembly caused issues with the mechanism. You’re absolutely right that the coil (spring) tension is a critical step: if it opens too much, tightening it back can be difficult and frustrating.
Your comments have been shared with our product and instruction teams, as this kind of feedback helps us improve both the clarity of the assembly steps and the reliability of the mechanical system in future batches.
If you’d like, our support team can assist you with practical tips for adjusting the spring tension, checking gear alignment, or arranging replacement parts if needed. Please don’t hesitate to contact us — we’ll be happy to help you get the best possible result from your model.
Thank you again for your honest review, and we hope your next Metal Time build will be a much smoother and more enjoyable experience.