Need help with driver's window
 

Hi guys, I've bought a used 2008 G35 about a year ago. I love the car, but I'm fairly confident that its been in a accident. The driver's side window motor works fine, but whenever I roll down the window it shakes violently. If I roll the window back up then bring it back down its smooth like it should be, so it makes me think that its just getting realigned on track. I was wondering if anybody else has experienced this, and if this would be an easy fix. Any help would be greatly appreciated!

infinitihelp.com

DIy window replacement.

but only tighten glass bolts to track!

Thank you, I actually have never seen this site before. It's seems to be really informative.