I recently bought a new Zinger, ZT 26RL. It's fantastic and pulls easy. It has what is called Wide stance axles. I have at least 15" between the inner most points of the tandem tires.
NO-ONE sells mechanical chocks that will reach between the tires. Luckily I am a sheet metal worker by trade, and was able to modify my chocks. Has anyone else had these troubles? if so reply and I can show you what I did. It sure beats having to stack 2x4's between the chocks and my tires.
P.S. this is my first post so I'm not sure how to include pictures.
Who or what is BAL. Do they have retail stores? I've looked at Camping world and even the Crossroads distributor said nothing was available except the old style that go in front and in back. These tires are 15+" apart at the center and probably 30" on the ground.