Finally go around to replacing old clutch cable. Adjusted the new one up correctly. first ride out after approx 1 hr, clutch lever was haard. could not pull in for the life of me. restarted bike and everything was fine. This happened numerous time and always came good. Also noticed that if you applied the rear brakes this triggered it (9 out of 10 times). Managed to get back to the car. Quick look inside revealed nothing obvious. What have I missed.