B & P, are you going to MORryde for the risers?
If so I would suggest you adjust your hitch to middle setting (high/low), I would also follow Cummins' suggestion as to front/back adjustment. IF you're going to MORryde they will measure your trailer and determine what amount of rise you're going to need. They added 2" to ours and it rides nice and level. Like Cummins I have the air ride rear suspension, truck rides LEVEL with any amount of weight on it! I LOVE that rear air suspension!!
Dan