I've had the old Iskys and a friend had the Cranes. The tips on his wore like crazy (they were on the car when he bought it). Mine never wore at all. I reused the stock shafts and I did have a problem with galling on a couple rockers - I think more due to the shafts being weak and going oval in spots. Good shafts are cheap insurance - even TRW stock replacement shafts are a good step up.