Adjusting is an easy thing to do provided you take an initial step or two before you start turning the adjuster. Make sure you mark the adjusting screw on ONE side with a marking pen color that you can see, and make another mark on the body of the steering box corresponding to the adjusting screw mark. Now you know, and can return to if necessary, your starting point. Hold the adjusting screw in stationary position with a screwdriver and loosen the adjusting nut, maybe a full turn, could be less. The adjusting screw mark should still line up with the mark on the body. Now, turn the adjusting screw clockwise 1/8 turn, then tighten the adjusting nut. Verify the new position with your index marks, adjust if necessary after tightening the nut. Drive your vehicle and see if it drives to your satisfaction. If not, repeat the process. If it ever feels that steering feel is getting stiffer to turn, you have gone too far, so start backing off until that goes away.
2008 Silverado LT, CCLB, Edge Insight CTS
2009 Arctic Fox 29-5T, Silver Fox Edition, Onan 3600 LPG generator