Well ill tell you what, when I painted my two brace bars on my grand prix i had, i would get front end noise just like yours. It drove me NUTS. I ended up not getting one of the bolts all way down, it was one turn from being all way tight, it happened duing speeds less than 25, especially when turning. Sometimes i would turn, makes the noise, im going straight speeding up, makes the noise. was not always when turning. Only when i was 25MPH and below, once i got on highway or a 45 speed limit road, i was a-okay.