I have recently taken off my factory roof rack to paint it.
When i went to put the bolts into the nuts that are (were) concealed in the roof, while the paint was drying, i noticed that they just spin once at a certain tighteness. Anybody know how i can fix this, welding tips, where to take it to have it re-welded.

These are the nut and bolt and roof rack, just so you know what i'm talking about. Thanks for all of the input!

http://photos-e.ak.facebook.com/photos-ak-sf2p/v239/43/23/575610340/n575610340_2852148_7744.jpg[/URL]
http://photos-f.ak.facebook.com/photos-ak-sf2p/v239/43/23/575610340/n575610340_2852149_8020.jpg[URL="http://www.facebook.com/photo.php?pid=2852149&l=ab080&id=575610340";] (http://www.facebook.com/photo.php?pid=2852148&l=6c806&id=575610340)