You should be able to access the steering box on a COE by removing the left front inner fender skirt. Otherwise, you will have to remove the grill. I have adjusted the steering box on both my Advance design trucks and on both it made a huge difference. It is worth the effort, most likely. Good Luck!

Kent

1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix