Yes. MDI mode-open bleeder, close bleeder, manual mode, tool unclamp/clamp a bunch of times, rinse and repeat. Now, if the Lucifer valve is failing/failed, all bets are off. Did you replace O-rings? Lots of grease? Was the drawbar shaft scored? Mori springs or aftermarket like Key Bellville? Aftermarket ones usually need to be deburred on the inside.