ROKR's typical pin-hole attachment method was a particular challenge for this model. I've built a lot of models, so I have a lot of experience with them. The pins were very small and often cracked or snapped when attempting to insert them. Instead I used glue. I got really lucky by enlarging the holes. I would recommend larger pins and/or holes. Everything else was acceptable, but the problem with the pens took a lot of fun.
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