I just odered a few extra from URC Hobby and when they bend I just put them in a vise and straighten them out. http://www.urchobby.com/proddetail.p...019&cat=81 

I have been having one problem though the front pinion http://www.urchobby.com/proddetail.p...110&cat=81 has been wollowing out and I have had to replace a few times...... any suggestions.  just very soft metal I guess.