The servo saver has a small plastic "C" shaped part that flexes when you crash into something, after many hits it tends to get weak and won't center the steering very well so take a look at that. The rest of the linkage needs to friction free also or it won't center. One of my racing buddys has a metal clip that goes around the plastic "C" portion of the saver to make it firmer but I have no idea where he got it. I use a 1/8" wide strip of electrical tape wraped only twice around the "C" part to make it firmer(poor man's way). One thing to know is if the saver is to strong then you will strip the steering servo.......BB
.....It's not a problem until it's on fire....