trevtherev

I had a similar problem with both my seat belts, and after I bought a second hand set of belts, they still seemed less than snappy to return. I saw advice to spray furnisher polish on the belt, but I wasn't keen on that as a solution, so I removed the belts from the car and pulled the belts fully out and removed the belts from the winders. I used clothes pegs to stop the winder from winding back. I washed the belts and allowed it to dry and refitted. Still, they seemed a bit slow, so I removed the belt again and added a couple extra turns to the centre, which made a heap of difference.