so i really wanted the chrome gnasher, and i had beaten the gears 2 and 3 campaigns but not the first. so i ran through the campaign in gears 1, got the achievment saying i beat it, and went on to gears 3 to put the chrome skin on but it wasnt unlocked. it also said under weapon skins that i hadnt beaten the gears 1 campaign ( which i just did) i went to dashboard and restarted the console but still nothing. is it a bug or am i doing something wrong??