Just make sure the engine is up to temp when you adjust them.After you do one side,usually have to warm it up again to do the other side....that is if you're slow like me.Competition Products has some good deals on girdles.Only place I could find that had some that would actually fit my Canfields.Ordered 3 other sets from three different people.All 3 sent the exact same girdles.Last two guys I told them what I had tried before,and didn't work and they sent those anyways. :twisted: Do you know how much it sux to buy 3 sets of girdles,with 3 shipping charges and know you're getting screwed??ALOT :lol: Nothing like having enough $$$ invested in wrong stud girdles to afford a good shaft system :lol: Run the girdles.Can't do nothing but help,and you know they'll never wear out!A loose poly-lock floating around in a motor can quickly negate a couple hundred bucks spent on a good girdle :shock: Peace of mind is nice,too.Good luck!