I searched and found this. I can't get my stop lever, B in the picture, to move towards the valve cover, so will not activate the valve. Linkages match this picture except the pin in the arc by S is in the middle. I didn't have any issues until I adjusted the valves. I was real careful, so not sure what went wrong. Tried bending things but stopped once it wasn't making any improvement.

Can anyone explain what some of these do? I know what C does, and if it is lengthened will increase fuel which will increase the idle. A has an arc that if bolted at the driver's end will decrease amount of input at the pedal needed. However, I have always had it that way and made sure it wasn't the cause of this new behavior, and it isn't.

Any further ideas?

Thank you so very much!

__________________
Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.