It is common when a clutch is dragging at high RPM to burn up the 3rd gear synchro blocker ring. In the pic, this ring wore down so badly that it bottomed out on the gear. It then was unable to work properly and 3rd gear started to grind. You can see the scratches on the end next to the teeth from this. Proper clutch adjustment is critical for long synchro life. When you receive your trans back from us, there will be detailed instructions on how to prevent a clutch from dragging so this won’t happen again and your car will shift quickly and smoothly at high RPM as it was supposed to.
