steering radius on 1967 massey 135

[megana]

Hi I was wondering if it is possible to adjust the steering radius on my massey ferguson 135 it is a 67 model year with the z145 engine i drove some other 135s before I bought this one that had a lot tighter steering radius but the one that I bought turned so much easier I went with it plus I got a really good buy on it.
thanks.

 

[murphy1244]

The only thing I could think of is making the front axle narrower. It does adjust.