Fender, meet tires.

[pooks]

My fender keeps getting knocked out of alignment so that it rubs the back tire. Is this common with fenders, or do I need to find a better setup?

[mimitabby]

it is common enough, but it shouldn't be too hard for the LBS to fix.
It's summertime down thar, do you really need them?

[KnottedYet]

yeah, that's pretty common. Depending on the kind of fender you have, it might be a quick fix.

Ask the LBS. They always seem to know a few spiffy tricks.

[pooks]

Oh, that's good. My husband has tweaked it but it keeps getting bent back again or something. Yesterday it was making it difficult to ride, which is weird to me. The fender is almost weightless (or so it seems) so it's hard to imagine it causing enough friction to do more than make a little noise.