Mike, my originals were peened in place with a cold chisel. The rivets were solid at the end, not tubular, and an "X" was made in the end with the chisel that expanded the end of the rivet enough to secure it. IIRC, the replacement rivets were semi-tubular rivets. I bought a set of rivet setting tools similar to
THIS to do them (see attached pic). Or you could zap a weld dot or two.
