sloppy Z bar linkage.....probably pilot error

The peddle assembly comes in two ratios; one for slantys and one for everything else.
The TO-fork in the window, should be almost all the way towards the rad with foot off the clutch, and, going to the rear, should have some room for adjustment as the friction material wears off.
The fork should be about 10.875 long, and for an A-body, almost dead-straight.
Adjustment is with the pivot bracket.
The Z-bar has nylon bushings, that ride on balls, that are attached to the end-brackets, one of which is bolted to the bellhouse and the frame-end ball-bracket should be welded and reinforced.
The Z-bar has to be positively located so it cannot move laterally. It should be parallel to the ground and at about 90* to the centerline of the car.