I find the Leak Proof seals too sticky but I’ve only used them in later, 71-on forks. The 70 stanchions are hard chromed (or so they claimed) and protected with gaiters so I’ve always used standard seals with those with no problems. Earlier, bare steel stanchions wear the seals faster so Leak Proofs May be better on them. Anyway I prefer less stiction over durability but so far the Ariete seals on my 72 provide a smooth ride and no leaks. One season only so far, too early to tell.