Did you ever wonder why so many steering column tubes are cracked where the spark & throttle levers exit the tubes? It's the same reason so many column tank mounts leak. It's because the steering box is bolted securely to the frame, and the frame is flexible, and when people used to drive like "The Keystone Cops" and went through dips at high speed and flew over railroad track crossings the frame flexed but the steering column was securely bolted to the tank bottom - so the tank mount and the tube took one hell of a beating. We weld up the cracked tube but it ain't so easy to fix the bottom of the tank. So, hang the tube from the dash rail and give the poor tank mount a little well deserved rest, and please leave the lower clamp off the tank mount or you aren't accomplishing anything.
Now days we blame using the steering wheel for leverage getting in and out because we don't drive like that anymore or drive on roads like that anymore, but most of the damage was done many years ago.
