Make sure the mask jacket bottoms out against the top of the steering box, NO gap. If there is a gap, the steering wheel will bind against the quadrant up top and be difficult to turn. This is a very commonly overlooked reason why two-tooth steering wheels are difficult to turn in "restored" Model A's. Tap the mast jack down until it seats completely! Then adjust the clamp and tighten the bolt and nut to keep the mast jacket from turning. Be sure to orient the spark and throttle arms in line before tightening that bolt and the two steering column bracket bolts under the gas tank. Check the travel of the spark rod vis-a-vis the distributor and rotate the mast jacket accordingly to achieve full distributor upper plate travel, another place for diminishing the Model A's performance.
Marshall