My Imps springs tend to "walk" side to side. I was going to get some "bend over keepers" like in the drawing above installed to stop this from happening. I was told by a spring shop that if the U-bolt were tight enough that they shouldn't walk. I think part of the problem is that the U-bolts I had made, by 2 different shops, are a hair wider than the originals. I started looking at pictures of Imps and a few that I looked at had the "keepers" and a rivet at each end of the springs. So I figured I would just get them put on, but then I measured the space between an original tire and the spring and it is less then 1/4 inch. Do you other Imp owners have the keepers/clips? If so how thick are they? How wide are your springs? How close to the tires? My springs also only have 4 leafs, not 5 like in the drawing, it is a wide track. I am perplexed...