I blew the conrod in mine and sent it in to Reedy and they replaced all of the internals as there was nothing wrong with the case or the head. They also replaced the backplate, plug button and the bearings. The only parts of my 121vr that were original were the head and the case. They were awesome and fast, 1 week turn around to get it back to me here in Calgary, Alberta, Canada. They didn't send me a brand new one but they may as well have.