Ours came with the Level Up, and short of having the frame sitting on concrete blocks, it will shake a little if there is someone moving at the far end, front or rear. It doesn't bother us as it is still very stable and we have seen no need for any additional stabilizers.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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