Need some help. I have a very strange problem with the steering in my Duster. This winter I had my steering gear box and the coupler rebuilt. The last thing I did was have the front end aligned. I was very happy with the result, the car went down the road perfect. After leaving a car show I had to turn the steering wheel all the way to the lock position and turned about 180 deg. before straightening the wheel out. Here is where the strange problems begin. After comming out of this turn to make the car go straight down the road the wheel is now 2-3 inches off center. It gets even stranger. It will eventually, after a few days, go back to normal. This has happened a few times and only after I have had to make a turn around with the wheel turned all the way to lock position. I took it back to the front end shop and everything is tight and all front end parts are new. HELP !!!!!!!!!!!!