Ok, thoroughly cleaned with lighter fluid and an old toothbrush. Done this numerous times with high pressure air between cleans.
Also noticed the “C” clip that holds the ball in wasn’t straight?
I twisted the “C” clip in till I seen 2 divots and it was locked in.
Put all together and the safety is a bit stiff but 90% better then it was.
Thank you Guntech for the info provided, much appreciated