Did anybody buy dog bone (#503214-1, 503216-1) for spare? I recently broke one front dog bone and when I open the part (503214-1) I found the hole on one end (for joint pin) is bigger than the broken one in my E4RS 2009. I contact TM and they said 503214-1 is old version and can't be used in E4RS 2009. If you want to replace dog bone, you need to buy the whole set (503214, http://www.wolfhobbies.com/E4_Parts-...l_Joint_2.html) Just some information want to share, if you bought parts above from Wolf, you may want to contact them