Recently changed the rack in my 96 with a used one. I cant seem to get the right Teflon o-rings for the pressure and return lines. I tried using the old ones over but they did not seal. The Ford dealers show 2 sizes. Both are way too small to fit over the lines. Both of my lines are about 3/4 diameter. Anyone ever run into this? I tried all the local part stores in my area, but none of their o-rings are the right size.