On the carb I have a Linkert M18 with the P/N 27267-49 throttle arm on it. When I turn the handle grip completely open I get about 180 degrees movement on the grip and about 1 1/2 inches of cable movement at the carb. This only allows the throttle to open half way. I have the 1954? controls that don't have the big screw in the end. These are repo controls so I don't know how original controls operate.
The spark control will pull the cable but when I try and turn it the other way the distributor does not move back. The control wire seems to wind up inside somewhere. I can move the distributor by hand both ways. Is it possible that the distributor is clamped down too hard.