I bought a Schumacher wiper pivot seal kit for my 71 Demon, and struggled for quite a while to get the water seals on. Then I came up with a solution which worked so well, it now seems obvious. The instructions included in the Schumacher kit say not to use a mechanical spreading device, but I figured that if I could find a tapered shaft, I could use it to stretch the seal gradually and evenly, and then transfer the seal to the pivot assembly. I tried to find a caulking gun tip or a plastic funnel, but couldn't dig those items up. Turns out a small Home Depot screwdriver was just right. P.S. - My hat is off to anyone who has ever installed these seals using only their hands!