2017 FORD E-450 Suspension Problems

THIS IS A 24' MOTORHOME. 2017 FORD E-450/ WHILE DRIVING IN REGULAR TRAFFIC, IF VEHICLE IS TRAVELING 50 MPH OR MORE, THE STEERING FEELS LOOSE AND THE WHEELS HAVE A DELAYED REACTION TO THE STEERING. THE VEHICLE DRIFTS VERY STRONGLY TO THE RIGHT OR LEFT WHEN ANOTHER VEHICLE IS PASSING AT A GREATER SPEED THAN I AM TRAVELING. SOMETIMES, THROWING MY VEHICLE ALMOST OFF THE ROAD, BECAUSE WHEN THE VEHICLE I AM IN DRIFTED TO THE RIGHT, THE COUNTER STEERING DOESN'T RESPOND IMMEDIATELY, HENCE IT IS VERY DELAYED. SOMETIMES IT FEELS LIKE THE WHEELS ARE OFF THE GROUND, FLOATING ON AIR OR NOT GRABBING THE ROAD. THIS HAPPENS MOSTLY ON HIGHWAYS, BUT ALSO ON CITY STREETS. I BROUGHT THIS PROBLEM TO THE ATTENTION OF THE MOTORHOME DEALER, THEY CLAIM THIS IS NORMAL??? VEHICLE ONLY HAD 1094 MILES ON IT WHEN I TOOK POSSESSION AND PROBLEM OCCURRED IMMEDIATELY WHEN I TRAVELED...