Rcently my son inherrited a box of old toys including many transformers from one of his uncles. In the box was the cabin for G1 Optimus. The cab is fine, but he didn't have the trailer. He thinks it probably broke and his mom threw it out. I am looking for it. Found a few on ebay but they seem to be for parts. Transformerland has one but it has the roller eject button broken. How hard is this to fix? Is it simply a spring I can replace or will I need to buy the piece from another trailer being sold for parts. I would love to have it for him for Christmas. He'll go nuts. He does take care of his Transformers. Thanks to my help though. Thanks guys.