That steering box is not "hard to reach". It is virtually impossible!
You wil need a set of incredibly long and thin arms to get up there, but i can be done.
You will find lots of threads with instructions on how to adjust the steering box properly if you do a
search like this one.
Beware not to tighten it too much, or you will suddenly need a whole new steering box!
Also, as already mentioned.. Those huge wheels will amplify your tramlining (wandering) problem greatly. But they sure do look good on that Benz.
Freestyler