I don't know how 4 post lifts work but my friend has a lift in his backyard and if you press the button SLOWLY (or tap the button) it drops fine but if you press it too fast it gets stuck soemtimes too
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BMW E93 M3 / Mercedes Benz W209 CLK500
BMW E64 650I(sold) / BMW E92 328I(sold) / BMW E46 M3(sold) / BMW E92 335I(sold)
Porsche 996 911 C2(sold) / BMW E46 325CI(totaled)
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