http://www.tfw2005.com/boards/trans...k-rodimus.html?highlight=black+rodimus+convoy What I did to mine is I took a Dremmel and opened up the pivot hole of the knee cap. This allows for the knee to "bounce" a little more when the leg is rotated while posing. Ok, so pictures are worth a thousand words: (Thanks to TFW2005.COM member PoweredConvoy for the original photo help here!) Basically, if you're able to get a new knee joint or repair the broken one, insert a Dremel in the pink highlighted area and make that hole just a little bigger. The problem is when the knee joint is turned on the hinge, it's just way to tight and the ratchet joint has no give to it. Opening up that area gives it that room to "bounce" while the knee is ratcheted. You can also utilize SydneyY's fix found in that feedback thread as well. I hope that helps! The only ways I know of to get replacement knee joints are: If you bought your figure from a dealer (such as BBTS or TFSource), you can contact them to see if they have replacement parts. Buy a second figure, use the knees, and sell the rest for scrap to recoup some losses. What I've shared can be a preventative measure if someone buys their figure, and doesn't touch it until this modification can be done. Beware that one can still buy the figure like I did, open it up, and have the issue right out of the box.