Scott, that is the clip in question. In operation there is no side force that I can think of. By side force I believe we are talking along the diameter.

That does not mean a greater side force than necessary was exerted during installation both by the original assembler and by me. I don't have the proper pliers to install it. I used a pick, placing the first tang in the groove by hand and then picking the second tang into the groove. It seemed to seat well. I could be wrong.

Come to think of it, it wasn't hard to do at all using a pick. Maybe too easy. Wonder if the clip is smaller than necessary. Hmmmm!