3D Printer Bed Leveling Problems Causes and Fixes

A simple mistake turned into a full teardown. After a bed crash on the Elegoo Centauri Carbon, I ended up chasing multiple issues— a bent lead screw, misaligned Z system, and a subtle strain gauge problem that made leveling unreliable and inconsistent. In this video, I walk through the full troubleshooting process: -Measuring and correcting lead screw runout -Realigning the triple lead screw system -Fixing a stripped pulley retainer (and how to avoid it) -Diagnosing inconsistent auto-level behavior -A risky—but effective—strain gauge adjustment -A simple manual leveling method to get back on track The result: a near-perfect first layer across the entire build plate. This isn’t just a “fix”—it’s a breakdown of how the system actually works, what can go wrong, and how to think through problems when it’s not just one issue. If your first layer is inconsistent, or your printer is behaving unpredictably, this will give you several places to start looking.