OK I watched the video and I used a small hose clamp to make a stop when the cab is lowered. Also clean and used a light grease to lube the slide.
That worked for a while and then it acted up again. Made up a new pipe and slide rod. Repaired the foot pedal, it was bent when the stop was set in the wrong place. I also had to add a return spring or else the throttle would not return.
I have a full weekend planned and will get back to you Sunday?

Don


1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!