If you have the temperament the effort to replace the zipper sliders is well worth it. On the other hand, if you are of short temper and no patience then forget it. The sleeve cuffs are sorta hard to deal with. Plan on 1/2 a day to do this if aggravated and 15 minutes if you are a whiz! At least your zippers will work properly afterwards. (Posted on 11/25/12)
Tip: if you're having trouble getting your replacement zipper on, try gently prying the slot open (very little) with a thin screwdriver. I struggled for an hour with the new zipper until I did this and it went on easily. You can then crimp it back closed with a pair of pliers once it's on.
(Posted on 5/15/09)