OK here's an update. A fellow Buick nut, who I won't mention since I didn't get his permission, gave me a tip which seems to have worked out quite well. Get the front wheels off the ground on jack stands, loosen the nut around the allen screw, and tighten the allen screw until you feel it doesn't want to get tight anymore. You don't have to over do it. Then turn the steering wheel 3 times full left and full right. Now tighten the allen screw again. Do this a couple more times. On about the third time, you will feel some tension in the steering wheel at the straight ahead position. Back out the allen screw a smidgeon, tighten the set nut, let the car down off the jack stands, and you are done. Go for a ride and let us know how it worked! I think you will be very pleased with your "new" car!