Since I have only owned single axle PUP and used the BAL leveler to level my camper side to side. I'm wonder how you level a dual axle camper? I watched on YouTube where someone just raise the rear tire with leveling blocks. Granted they only raised it 2 inches so the other tire was still on the ground but I"m wonder if this is the correct way or not. Or do you have to have enough blocks to raise both tires on the side needed?