Update on this possible intake problem:

About the rattling/vibration I was describing. It ONLY occurs at 2000 rpms(in any gear), and a lil over, once it hits around 2200-2300rpms it dissapears, until the next gear... I know the runners open at 2500, but what is occuring at 2000 rpms?? Its been about a month now, and the rattling seems go get louder each week....I plan on tearing into it very soon, but I have no idea what I am going to encounter..

Has anyone else seen/dealt/resolved this problem???