We HAD the same problem. Take one look at the picture below and you'll see the geometry of why the rear was too heavy. Anything packed behind the rear wheels was pivoting weight of the front axle. Soooo, we started with the basics, pack everything heavy to the front of the coach. Because of the cantilever effect we were able to add about 450 pounds to the front axle just in moving things around in the coach. Its a rear kitchen but now all the canned goods are packed in the front...etc etc. Next came the spare tire which was mounted on the back. Can't remember the exact number but seems to me that put close to another 300 pounds on the front axle. New shocks, and a rear stabilizer bar (not standard on an E350 unlike the E450} Changed out the rims for Aluminum wheels, (tired of the beauty rings or hubcaps or whatever they are called) and ran the tires about 20 pounds less pressure than the sticker (on the front) essentially following the weight tables for the tires. Also all new shocks, nice and tight. WHAT A DIFFERENCE. Not as fun to drive as my smart car but a huge improvement.