I was curious to see what a view straight into the side looked like. Seems to me the WB is short for the overall coach length. Still, you've read where our members have had good results with similar ratios.
I understand the Safe-T-Plus you've added to the steering linkage.
E450 comes with a grossly undersized Rear Sway Bar. Did you replace that, and with exactly what? By that I mean Brand and Diameter. Ditto for the Front.
Are you towing a vehicle or trailer?
Do you have a report from the alignment shop? It's produced from the alignment machine, and usually reports Before and After for Caster, Camber, and Toe.