After reading all the threads about rebuilding the t-20 and wondering what condition mine was in after setting in the weather for how long, who knows. I tore it apart to inspect all the parts, order the gasket and anything else that looked damage. When I got the parts, I then install the parts in the right side of the case and got to the last half inch c-clip, than I looked in the box and noticed two large steel washers in the parts box. At this time I thought no biggie I'll just take it apart and install the one that goes in the half that I was working on and the other has to go to the left-side(right?right..). So after taking it back apart and finding no place for it, I then find out that my buddy's where playing a cruel joke on me by adding extra parts to the parts box.( As if I don't end-up with enough extra parts at the end of all my projects).. I then got it all back together all the way to the half inch c-clip and figured that with as much horse power that I was putting to this thing I better replace all the bands, so than I ordered one more right and two lefts, than tore it back apart. Once the bands arrived I installed the new band and got all the way to the half inch c-clip and put it on, than I decided to use RTV instead of the gaskets so I needed the c-clip off so that when I got the other half of the case ready I could apply RTV to both sides of the separator plate than bolt it together. So not thanking about what I read that someone posted and what a good idea it was to put a rag over the clip when you take it off. I proceeded to pry this half inch c-clip off and than it happen, it shot off toward the back of the grange, made some sound like it was bouncing around, than stopped. After looking for it a few times and just about to lose my mined I than went to the auto parts store and after three auto parts stores and not finding the right one I am now learning all about the t-20 and at this time I would be half way if I only had that stupid half inch c-clip...