I ran one at GCOS site in Fort McMurray Alberta in about 1971. 871 in front and back,it had all the rotten TS24 habits like weak steering etc.; You couldn't angle the blade enough to roll your dirt and it would duck walk at the drop of a hat, Steering wheel out of a ship, leaky controls with full hydraulic flow to keep the cab good and toasty. Worst machine I ever ran! It was sold< went to Pakistan and then baqck to Canada to a Sask owner and now rests at Devon in a heavy equipment society display.