Unfortunately, my pegs are plastic and it looks like they are molded one piece with the exception of the folding locking tab. On the underside of the seat, the peg has what appears to be a one piece plastic washer that is captured with the peg (please see bottom photo). The folding tabs, which are twisted to lock the pegs in the peg hole, have a very small friction fit drive pin which appears to be the only removable part on the peg (please see upper top photo). Removing the drive pin would separate the the folding tab from the peg body and possibly allow the replacement or addition of the new pad. It is a very small diameter drive pin and I don't have a tool for that as it seems it would require a press of some type. ???