Hello GaryT350.
Thank you for your feedback and for using the trimmer over the past year, we are glad to hear it is performing well for cutting, but we understand that rewinding the spool can be challenging. For best results, we recommend removing the spool and ensuring you are using the correct line diameter specified for your model, as thicker or incompatible line can make winding more difficult. When refilling, try to keep the line evenly tensioned and follow the directional arrows on the spool to prevent binding. It can also help to avoid overfilling, as too much line can cause resistance during installation and use. Periodically cleaning the spool housing and checking for debris can further improve ease of operation. For a step-by-step visual guide, you may find this video helpful: "String Trimmer General Maintenance - Replacing the Trimmer Line (S-Type Trimmer Head)" (https://youtu.be/-3UtaGkO0vI). We appreciate your input and hope these tips make the process easier moving forward. 909-6757. If you have exhausted all troubleshooting steps and the problem persists, contact us through on www.greenworkstools.com or call Greenworks toll-free helpline 1-888-909-6757. So, our experts can discuss your experience; please have your unit, battery and charger with you along with the model and serial number to complete troubleshooting to ensure quick resolution is provided.