Is it possible to adjust the shaft on the steering wheel about 1 inch toward the middle of the car?
You don't have to adjust the shaft on the steering Wheel, but the opposite: adjust the steering wheel on the shaft.
Under the horn hub, unscrew the nut (item 5) page 105. The steering Wheel is fixed on splines and a cone (page 30). With your steering Wheel there is an interface part between the steering Wheel and the shaft.
http://www.morgan-cars.com.cn/wp-content/uploads/2013/02/morgan-traditional-parts-book-2006.pdfPerhaps misunderstanding? What do you want to move, steering wheel or shaft?