Notice that someone ground off the lower stop on the rotating disc.

Ok... I found the problem. The metal balls you mentioned are al jammed together in there.

I wiggled them around with a screw driver and got it all sorted out. put it all back together and it operates properly!


THANK YOU SO MUCH!

Remove the governer assembly after removing the linkage (8,9,10). Examine the cup, balls, and ramp of the governer (24,25,26). It should be obvious a ball is displaced. Compress the spring and get the balls to lie in the correct position. You may be able to do it without romoving the governer but you have gravity working against you. Its not hard, takes a few minutes and nothing is damaged.

To avoid this problem, when I remove my cylinder I first remove the nut from the actuator plate stud, then the actuator plate from the drum valve, and finally the rod from the actuator plate. This lets you move the loose plate around to free it from the rod rather than pulling on the rod.

Good tip. I've been lucky so far but this will help weight the luck in my favour. :)