Like everyone else, I'm having trouble with the new tilt function using the rear lever. Here's how I fixed mine. First, find the exact center null point using the calibration program. Then tape the lever securely in place. Drill a small pilot hole through the lever and just barely into the lever's base. Enlarge the hole in the lever only enough to accommodate a small screw. Round off the point of the screw leaving it a little long so you can adjust how much drag you want. Voila! Instant centering detent.