Yeah, a gyroscope keeps a satellite pointing because it resists changes in its spin axis – the conservation of angular momentum. But in reality there are a few things that creep in and cause the drift. Tiny torques from solar radiation pressure, residual gas leaks in the satellite, even the imperfections in the spin mechanism itself. Over time those small torques add up, making the spin axis wobble a little. That’s why you need active control – a reaction wheel or a magnetic torque rod – to nudge it back. So your fine‑tuning is exactly what’s needed to keep the attitude error from turning into a full‑scale misalignment. Patience, I see. Keep a close eye on the bias and you’ll have it under control.