Ok let me know if this is common or not.. Just got done moving fiance back and i'm driving down the highway and i can hear wind noise in the back window drivers side.. I pulled over to try to fix and the window all the up and there is a small about half inch from the top of the window to the top of the window frame. but the window moves freely, i can grab with my hands and i can pull it up and move it side to side freely like its not attached to anything.. but the track is still go up and down.. someone from napa said that the plastic that holds the window is known to break quite a bit.. is this and easy fix ?? and what do i need to order to fix it.. don't have to buy a whole door do i to fix it??