Remember - do not get oil in the cavity where the balls go, just use one drop of very high quality oil on the end of the crankshaft, and don't let it migrate elsewhere. No other lubrication. Your problem almost certainly came from dirt or old, sticky lubricant in the ball cavity and on the cam/rotor. Your recent 'cure' has probably put lube in the ball cavity, which has temporarily softened the dirt and dried-out lube that caused the problem, but before long it will dry out too and make the original problem worse. You need to end up with the ball cavity surgically clean as well as smooth and dry. See what the tips of the cam/rotor lobes look like after the recent mishap, in case it is beyond salvage.
