Originally Posted by mralaska
A few people have mentioned replacing the mounting bolts with Grade 8. Personally I elected to go with Grade 5 which are still much higher quality than the stock bolts but they have a certain amount of 'give' that is lacking in Grade 8 bolts which are stronger but more brittle. After a few rides in the rain, though, I am also thinking stainless might be a better option.
Good advice, grade 5 are better in this application, stainless are O.K. but brittle in the same way as grade 8.