I am in the process of building a leaf pack and I bought some new U-Bolts, although upon a closer look I noticed how the 'U' part of the bolts are not uniformly curved. You can see in this picture. All four u-bolts are like this. Is this OK. Since the bolt will not contact the axle evenly, will this cause any problem? Thanks.
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http://i483.photobucket.com/albums/rr193/co171/9.jpg
http://i483.photobucket.com/albums/rr193/co171/9.jpg