My a/c has developed an intermittent problem where the unit faults when it first turns on, but eventually comes on, on the second or third attempt.. I wanted to replace the starter capacitor, but I couldn't disconnect the leads from the capacitor posts. I certainly didn't want to put too much force and break something when we still have a/c. How would you go about disconnecting the wire leads from the capacitor posts? I've been in the house for 28 years. The unit is around 34 years old. I believe the starter capacitor is original.