Yesterday when I parked my car, the trans had no problems. When I went to use it again I couldn't shift into first gear. I didn't try to didn't force it, but I could get all of the others 2-3-4-5-R. I used second gear starts to get home and tried putting it in first gear once I was in my garage. It went right in. Has anyone had this experience or know what is happening here. Are rebuild kits available for 523's? Are shift forks available. Is there a link to a troubleshooting guide. Thanks!