We have the plastic blocks and some of ours have broken too. They are made differently now though, so maybe they are better. For us it always seems to be more height than we need to get level. Just as any 2 by seems to be for us. Now we mostly use them under the landing gear and rear stabilizers.
We're really interesting in the Level-Air ones, but wonder about the movement in the camper. We more often than not need a minor amount of height to become level. I could get rid of at least one bag of blocks and they wood we carry. That would lessen the weight some.
Patty
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