I think I only lengthened the rear lower links like 1/2-3/4" and the noise was completely gone. Make sure and measure the length of the top and bottom of your driveshaft from pinion to pinion and try to get them as close to the same as possible. If you can see the teeth of your driveshaft coming out of the rubber cover you have gone too far. Also make SURE FOR SURE that each side is EXACTLY the same length. I double and triple checked this. Also make sure the nuts are tightened very good the one closest to the door seems to shake itself loose sometimes, might be good to put some thread lock on there.