One of the trade magazines recently wrote that if you have 4" or larger suspension lift in a TJ you have to live with constant vibration in the front end b/c the drive shaft is always engaged and there is no way to correct the angle. They recommend manually locking hubs. I run a small lift but plan to go bigger. I have not figured on front driveshaft issues as I thought the extra length made it a non-issue. How bad is the vibration and does it cause handling or tire wear problems?