1935 Fordor - play in steering wheel. Adjustable?

[ScubaChief60]

Hello all... in my fine tuning of my '35 restoration... I am now planning to try to tackle some play in my steering wheel which I imagine is from my steering gearbox. It has the John Deere 'corn head grease' in it and works very smoothly. It has about four inches of travel in the steering wheel before anything happens with the steering. I see on top on the gearbox what I am hoping is an adjustment to tighten it all up.

Drag link and tie rods all are perfect with no play. Tie rod ends replaced and alignment done. It drives well but would be much better without any steering wheel play.

But before breaking anything I am asking all of you. Thanks!