My 03 had lazy front seat belts on both sides so during an interior tear down, I pulled the seat belts.
Initially, I thought you could remove the belt from the spool easily, then load the spool with a few extra turns. However, It appears on this model, the seat belt was passed through the spool and then sewn together. There was no other way to remove the belt from the spool other then cut it at the end. So, with the help of a family member who has HD sewing machines for leather, we set about the mod. I only took one photo but hopefully it helps someone. We loaded the spools with 3 extra turns and then reassembled the belt, and sewed the end back to its self. One of my belts has an assembly to lock the belt regardless of pull, at maximum extension. The lock is shown here as well to help with reassembly. You may need to re-time this afterwards.
Its still not as snappy as it should be, but there is a difference.
P.S. turning the spring assembly is not an option as the clock spring would be near impossible to put back in.
Initially, I thought you could remove the belt from the spool easily, then load the spool with a few extra turns. However, It appears on this model, the seat belt was passed through the spool and then sewn together. There was no other way to remove the belt from the spool other then cut it at the end. So, with the help of a family member who has HD sewing machines for leather, we set about the mod. I only took one photo but hopefully it helps someone. We loaded the spools with 3 extra turns and then reassembled the belt, and sewed the end back to its self. One of my belts has an assembly to lock the belt regardless of pull, at maximum extension. The lock is shown here as well to help with reassembly. You may need to re-time this afterwards.
Its still not as snappy as it should be, but there is a difference.
P.S. turning the spring assembly is not an option as the clock spring would be near impossible to put back in.